looking for a Integrated amp $6,000 range

I've used a BAT 3000SE for the last 3+ years.  Built like a tank.  150 watts per side.  Hybrid, so two tubes in the pre-ampstage.  It lists at $8000, but I believe cosmetics will change soon to be in line with new BAT look, so you may be able to get one new for your price range.  In fact, there was a time a few years ago when Music Direct had a sale for $5600 (naturally, a few months after I got mine!).

The only reason I'm trading mine in is to upgrade to D'Agostino Progression.  So, you should be able to get used for $3000.  (If you are interested let me know.)

Second the recommendation on the Ayre AX 5.  I just got a new one. Phenomenal amp IMO. 

Tube ? the Audio Hungary I-20  Solid State ? Moon River R.

Gryphon Diablo 300 best I had heard , But,  you might have to sell your wife and kids off to buy one.

Many good choices. I love my Jeff Rowland Continuum S2.