It's not for me, but some guys like it. It's not legal everywhere to hunt with. Like everything else, you gotta true the system to match real world of your gun/ammo.
Seems to good to be true. I have a Terrapin X, and a Kestral 5700 I am learning how to use. I keep thinking how screwed you would be if it failed and you didn't know how to adjust turrets. The Terrapin is a better LRF at first impression.