I've got a Zeiss Conquest 3-9x40 on my .300 Weatherby and so far it's held up perfectly to 3 hunting seasons and about 750 rounds of ammo fired through this rifle. Optically it's better than any Leupold I've ever owned, including the new VX III.

And another thing, Zeiss service is as good as any. I had a 4.5-14x44 Conquest on a rifle that I dropped on the pavement. The scope got banged up pretty good, so I sent it to Zeiss's service center to see if they could do anything. Well, they did something alright, they sent me a brand new replacement at no cost to me and it was on my doorstep in just over a week.

So, if you can't tell already, the Zeiss Conquest 3-9x40 gets my vote.