tube amps or amps between $1000 and $2000

I love my Cary CAD-50M MkII monoblocks..Pentode or Triode... 4/8 ohm tap switch. KT-88 based, so tubes are reliable and easy to obtain. Superb sounding amps for about $1200-1300 pair going rate on the GoN. They dont come around too often however.

Rogue M-120 Magnum is in your price range, for a little more the Rogue M-150 Magnums. I bought the 120's a few weeks back and like them a lot...very musical and have a good power supply... which is what you will need if you want to maintain solid state like bass response on your full range speakers.

I'm driving 4ohm/87db Apogee Duetta Signatures with mine so Should work well with your 91db VS's.

Dave

Well since you have a BAT preamp how about a used VK-60? Assuming of course that you like your preamp.