tube amps or amps between $1000 and $2000

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

Also, take a look at the Aronov LS-960 and the LS-9100 monoblock amps on aronovaudio.com.
A used pair recently on sale for $1900 here on Audiogon. A stunning bargain price; not sure if still for sale, but worth checking if you want to avoid that restless feeling any time soon.
I realize you want the best, although you cautiously used expression "decent sound," and each of the earlier recommendations really excellent, but Aronov surprises in a special way. Aronov bass is hard to equal for tube amp, or any amp. Have heard a lot of the great amps at the NYC Stereo shows, and still not restless, myself.