I'm looking at scopes for my T/C Omega .50

I have a VariX II on my .270 and love it, mainly because its the first scope I've had that has not had to be re-adjusted every couple years and this gun really takes a beating all year long.

I had heard it said the new VX line of scopes are of a lessor quality than the older VariX series. Any thoughts on this?

Was looking at the Nikon line of scopes. My biggest priority is to find a scope that will stay on target. I dont want to throw down any more than I have to for this scope.

Are the Nikon Pro Staff or Buckmaster series scopes likely to take the punishment of a magnium blackpowder load?

As far as clarity, Even the cheap Tasco's I've used had always proved to be adequate for the type of terrian I chase white tails.

Thanks,

Mike