Is it possible to buy a rangefinder for under $500 that is consistently accurate out to at least 800 yards? I am asking for a rangefinder for Christmas but don't have the money for a top end model. I see that a lot of them advertise out to 1000 yards within my budget but, I would like to hear from some real world experience if this is all smoke and mirrors. I was looking at the vortex ranger as it has some really nice specs but, I would like to hear if anyone has any real world numbers on it or any other similar range finders for that matter.