I am obviously not an expert by any stretch of the imagination nor do I claim to be. I have just been researching this allot because I was in the same boat as the OP about last year at this time. I broke down and bought one and a have a few of my own opinions now. My question is, what kind of technical specifications do you look at in a thermal. I am assuming core resolution and refresh rate. Seems like everyone has settled on a 50hz refresh rate with some pushing 60hz. Resolution seems like a major player in the price tag obviously. Your cheapest models will start around 320 and work their way up to the expensive models which are 640. What else? Things like being able to record or sync with your phone just seem like bells and whistles that add to the price when personally I would much rather have that extra money go into quality and better resolution which is why I went with the hogster. I got a slightly higher resolution with no bells and whistles at a lower resolution price tag. I also read that as you increase your zoom, you decrease your resolution which based on my own experiences seem true. Is this less obvious in the more expensive thermals or is it the same? I read where someone said every time you zoom in that you decrease your resolution by half. Is there any truth to that?