I own Leupold Vari-X IIIs, Burris Black Diamonds, Nikon Monarchs (and Pre-Monarchs), Nightforce NXS, and Bushnell Elite 4200s.
I am one of those folks that really likes the Nikons. As I own both Nikon Monarchs and Elite 4200s, I believe, in my opinion, that optically speaking, the Monarchs and 4200s are very similar - I simply can't tell much of a difference, with an "ever so slight" edge to the Elite 4200s.
The Burris BDs are rock solid, but their optics are not as good at the Monarchs or ELite 4200s.
The Vari-X III are very good scopes but overpriced.
The Weavers? Well, I never owned one, but I would be leary about any seller "pushing" this product. I have been told that there is more of a profit margin on Weaver scopes than most other brands.
If you are seriously considering a Weaver, then you would still be much better off with an Elite 3200.
Zachary