You might want to look at Zeiss Victory V8 and Steiner. Don't think there is better glass anywhere. Haven't looked thru Tangent Theta so can't comment on them.
FWIW, although my March 50X is a magnificent scope, it is VERY dark in low light. So don't assume price means bright. Make sure you have a chance to see the scope in low light conditions if that's a primary concern. My Weaver 46 is much brighter in low light, at a third the price.
First thing....get those cataracts removed and get those store bought eye lens!!! I did and couldn't believe the difference. The colors really popped with vividness and vibrancy. No more glasses or contact lens for distance or reading. Could see in low light again....probably not like when I was 20, but way better than before surgery. (Do not buy the "they aren't bad enough yet" story. Tell your ophthalmologist that the cataracts are adversely impacting your quality of life...the criteria for insurance to cover the surgery!!! If he doesn't agree, get another ophthalmologist. Cataracts don't get any better, and the benefits of the surgery don't get better by waiting longer. You only lose the benefit while waiting.) You cannot appreciate what you have slowly lost over the years. Life is short, don't miss it. Do a little research on how optics really deliver performance. The more you understand, the more you will be able to evaluate the best solution for your needs. One aspect to consider is look for a scope that provides exit pupil size near 4mm which is about older eyes maximum opening even in low light. A larger exit pupil wastes light not reaching the eye. Too small of exit pupil also doesn't optimize viewable available light on the retina. This becomes more critical as aging occurs. Exit pupil diameter in mm = objective lens diameter in mm divided by scope power setting. (ie. 56mm/25 power = 2.2mm exit pupil....not optimum light utilization. 50mm/5power=10mm exit pupil....also not optimum. 44mm/10mm=4.4mm exit pupil....pretty close. 50mm/12.5 = 4mm....better choice.....gathers more light and optimizes exit light utilization at higher magnification. Also, an illuminated reticle that can be dimmed in low light is helpful in distinguishing dark object targets in shadows from the black reticle. Too bright reticle tends to wash out the darker target. Particularly for older eyes. For selecting which brand/model scope, everyone has an opinion based on their experience....and their eyes. Only your eyes will give you the best answer. In optics, beauty (clarify, resolution, etc.) is truly in the eyes of the beholder. You must actually see the scope in the field under actual conditions to accurately judge for yourself. That means going to a shooting range and making personal connections that will allow you to view their actual scopes under actual conditions. Scope opinions are like buttholes....very one has one, but it really only benefits the owner. Including me.Guys, Looking for advice from you old guys. As we age our eyes change. I've noticed my eyes require better and more expensive scopes with better resolution to see well as I am getting older. I am having a new beanfield rifle built and need to choose a scope. We hunt big fields and the ranges can be pretty far. 900 is not unusual at all. Deer here are hunted hard and nearly nocturnal. Shots always come in poor light, usually just before dark. Have a little cateracts, and don't see as well in poor light as I used to. All that being said, looking for a scope with excellent tracking, 1min wind marks, and really great glass that stands out in class in low light. Needs to top out around 25X. Cost really isn't an issue as much as trying to get the most out of my old eyes, but would like to stay around $3k or so. The options are mind boggling. I do know a Vortex Razor won't cut it anymore so don't go there.
I understand where you're coming from.Guys, Looking for advice from you old guys. As we age our eyes change. I've noticed my eyes require better and more expensive scopes with better resolution to see well as I am getting older. I am having a new beanfield rifle built and need to choose a scope. We hunt big fields and the ranges can be pretty far. 900 is not unusual at all. Deer here are hunted hard and nearly nocturnal. Shots always come in poor light, usually just before dark. Have a little cateracts, and don't see as well in poor light as I used to. All that being said, looking for a scope with excellent tracking, 1min wind marks, and really great glass that stands out in class in low light. Needs to top out around 25X. Cost really isn't an issue as much as trying to get the most out of my old eyes, but would like to stay around $3k or so. The options are mind boggling. I do know a Vortex Razor won't cut it anymore so don't go there.
Guys, Looking for advice from you old guys. As we age our eyes change. I've noticed my eyes require better and more expensive scopes with better resolution to see well as I am getting older. I am having a new beanfield rifle built and need to choose a scope. We hunt big fields and the ranges can be pretty far. 900 is not unusual at all. Deer here are hunted hard and nearly nocturnal. Shots always come in poor light, usually just before dark. Have a little cateracts, and don't see as well in poor light as I used to. All that being said, looking for a scope with excellent tracking, 1min wind marks, and really great glass that stands out in class in low light. Needs to top out around 25X. Cost really isn't an issue as much as trying to get the most out of my old eyes, but would like to stay around $3k or so. The options are mind boggling. I do know a Vortex Razor won't cut it anymore so don't go there.
I hope I didn't come to late to this party, but here is my input. I'am 68 and just went thru your experience. I got a lieca magnus and was absolutely astonished at the the light gathering capacity of the scope. It is the best in that category that I have and I got some good glass (swaro, high end leupold, NF, S&B, kahles). I got the 1.5 - 10 but that is a personal preference you may want more. Comes with MIL or MOA.Guys, Looking for advice from you old guys. As we age our eyes change. I've noticed my eyes require better and more expensive scopes with better resolution to see well as I am getting older. I am having a new beanfield rifle built and need to choose a scope. We hunt big fields and the ranges can be pretty far. 900 is not unusual at all. Deer here are hunted hard and nearly nocturnal. Shots always come in poor light, usually just before dark. Have a little cateracts, and don't see as well in poor light as I used to. All that being said, looking for a scope with excellent tracking, 1min wind marks, and really great glass that stands out in class in low light. Needs to top out around 25X. Cost really isn't an issue as much as trying to get the most out of my old eyes, but would like to stay around $3k or so. The options are mind boggling. I do know a Vortex Razor won't cut it anymore so don't go there.