I have not had the best luck with the standard 3-9X40 VXii, as I have had several loose zero over the years, but their FXIIs and Ultralights have been solid for me. Back in my Leupold days I wasn't rich enough to try their high dollar stuff so can't really comment on them.

[Linked Image from i.imgur.com]

This VXii suddenly started shooting a foot high at 100 yards, and almost cost me a young tahr I wanted for camp meat. Luckily he was Campfire level retarded and gave me practice shots, as he bounced around on the rocks above me. Thinking he may have been wounded I took some shots I wouldn't have done otherwise. Knowing I was missing/hitting high due to his reaction, I aimed at his knee on my fourth shot and dropped him. Maybe it was the shïtty mounts. Maybe it was the scope. Hell if I know.