which amp for 12,500

used VTL 750 reference

Listen with your ears, then decide which amp is for you. Cheers.

With B&W, Classe Omega is a must audition.

If you want tubes take a very hard look at the Canary CA-339. By far the best amps I've owned, though I use them on speakers that are somewhat easier to drive than your 802s. Another option would be the Convergent Audio JL-2. There's a review of the latter on this site.

If you're interested in solid state, think about the Parasound Halo JC-1. They have a great reputation for a combination of power and delicacy. They seem to be a particular favourite of the Soundlab crowd, and if they'll drive those they'll drive pretty much anything.

On the solid state side (which is what I auditioned recently), my favorites in or under that price range were the Theta Digital Enterprises and the Edge NL-10. You may be able to afford the Theta Citadels (which are almost universally raved over) or the Edge NL-12. I had both the Enterprises and the NL-10 in my home for an audition, and to my ears the Theta had better soundstage width/depth, slightly better detail, and a more musical presentation overall.