Well, I had no problems ranging deer out to over 1000 yds with my LRB 7x50's last season. They worked perfectly. About my only complaint with them is they're a bit big and heavy. But I'm happy enough with the performance I might give the new 7x40's a try--they look like they'd be much nicer to carry.
Of course, it's important to note I'm on my 3rd one. The first two were junk. I sent them back and they were replaced under warrantee for free. The one I have now flat out works.