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.

Conrad Johnson MV60 (EL34s) or MV60SE (6550s) depending on what you listen to. The latter is better for orchestral and rock. They go for $1500-1600 used.
Quicksilver Mono 100s (KT88s). <$2000 used.
Both are superb amps.
Third choice would be a Rogue Stereo 90 (KT88s) @$2k new.

sorry about my response i misread it try the aes six pacs they are superb