My local high end shop has an open house every year. In Oct. 2006 the system that blew me away was a a SME turntable driving a VTL signal chain with VTL reference monoblocks driving a pair of Wilson Alexandria V2s. The sound was phenomenal to the point of causing sane men to consider a second mortgage to put this system in their house. This past April I went again, and this time the Wilson MAXX's were being driven by a stack of the new Ayres that are carved out of solid billets of aluminum. Although they sounded excellent by most standards, the VTLs of the year before totally spoiled me. The Ayre chain sounded like electronically reproduced music. I could go home to my much cheaper system at home and not feel like I was missing a whole lot. The VTL chain from the year before made me forget all about the equipment; my jaw was too busy dropping because it sounded like the Duke Ellington big band was in the listening room.
I don't know how much of a house sound VTL has, and the top end monoblocks (such as the Siegfried) have a lot of solid state logic controlling and guiding the tube circuits to extend their linearity, speed, and consistency, but there are currently some high powered VTL monoblocks in the A-gon classifieds in the $5K range that should make your Sophias get up and sing, bark, and boogie. If you could find something from VTL's Reference line on the used market at your target price ($10K), I don't think you would regret it or want to move on to something else for a long time.
I don't know how much of a house sound VTL has, and the top end monoblocks (such as the Siegfried) have a lot of solid state logic controlling and guiding the tube circuits to extend their linearity, speed, and consistency, but there are currently some high powered VTL monoblocks in the A-gon classifieds in the $5K range that should make your Sophias get up and sing, bark, and boogie. If you could find something from VTL's Reference line on the used market at your target price ($10K), I don't think you would regret it or want to move on to something else for a long time.