welll I have a leaf river IR and I love it, mine does not seem to be slow, i dont have many pics that are of deers rumps, I think alot of it is camera placement. The only thing that i would like it to be better at is the color in the daytime photos are a little off but as long as i can see the deer and how big it is i dont need anything else. I would recommend it for 300 before the 500 bucks on a cuddeback and then all the mounting hardware. 600.00 just doesnt seem right.