I have a Leupold FX-II 4x33 that has been a good scope.
It's quite durable. It's been mounted to a Springfield M1A Scout and rattled around in the back of a truck on some really rough forest roads in eastern Arizona near the Mogillon Rim, and kept zero fine (the mount didn't keep zero, but that's another story... tighten the mount up again and the rifle was back to zero give or take a minute).
It's been mounted on an Armscorp M14, also, using a different M14 pattern receiver mount (previous one was an ARMS #18, this one is an SEI). Also less than impressed with the mount stability, but the scope stays true as long as the mount doesn't move.
It's been mounted on an American Spirit AR-15 20" upper and been a nice little setup on there, though that rifle now sports an ACOG instead of the FX-II.
Right now it's waiting for a new rifle to sit on top of. Some day I'll happen upon a little private party left handed Savage or Remington .308 that would be perfect for this guy, and it sits in my safe waiting for that day.
I'm a big fan of low magnification, fixed power scopes. I have 4 of them... the ACOG, this FX-II, a cheap chicom ACOG knockoff on my .22 AR, and a Bushnell 4x32 (basically a low-end copy of the FX-II) on a .22 savage autoloader.