There are lot's of good scopes out now. I've found the "new" Nikon Prostaff to be pretty darn good for the money (with the BDC reticle).
Vortex Diamondback, Zeiss Conquest, Redfield Revolution are also excellent from reading reviews and comments in this forum and I'm sure I've missed some.
It all comes down to how much you have to spend. Many will say Leupold is good but for me they aren't worth the money they ask. I've compared them to Nikon (exquivalent models) and the Nikon always seem clearer to me. But that's just my opinion. You have to do your own homework.