I borrowed a set of these from a friend, a few days ago. I will have them for a total of 5 days. So far so good. I've got an 800 yard range in NW Texas, with steel in front of berms every hundred yards. Yesterday morning, with the sun shining in the face of the optic, here is how it ranged:
Ranging steel:
800 Vortex says 798
700> 698
600> 598
500> 498
400> 400
300> 295
200> 196
100> 104
Many range finders have lasered my berms, and got exact hundred yard increments. Is the error enough to cause someone to miss center? No. But I would like to (and will) test the laser beyond 1000 yards.
The glass. Man, it really is nice. I've been playing with it overcast, sunny, dusk, from sunlight into shade, from shade>across sunlight>and into shade. I kept glassing last night up to 30 minutes after sunset. Glassing east, I could still clearly make out tree leaves at 380 yards, 17 minutes after sunset. Glassing NW, I could still see details on my entryway and gates from 540 yards away, and it was 20 minutes after sunset. So far, the unit is telling me I need to buy one of my own. Only negative (for some people) it does weigh quite a bit. It doesn't bother me, but could bother others.
I'll report anymore findings.