tube amps or amps between $1000 and $2000

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.

Conrad Johnson MV60, MV60SE for tubes

Marsh A400s for SS

Blue Circle amps for Hybrid

If you like buying gear under the radar that is very, very good for the money then look at Mcalister Audio out of Canada. Great tube amps! $995 for a brand new 75 tube amp.
Fresh approach to tube amp design.

Bill

I'll second Jond's recommendation on the BAT VK-60, You'd be hard pressed to do better at their used prices.

John