Threshold, Levinson, Bryston, Krell, ?others? used amps



Hi All.  I'm looking for a bang for the buck, diamond in the rough, 200-ish WPC power amp that will hang really tough with what's out there today in the vintage or recently new realm.  Trying to keep $$$ under 2K.  I currently own a Nakamichi PA-7 (Nelson Pass Stasis design).  Looking for an amp that is great at doing the disappearing act, smooth sounding, but not colored, and with lots of authority.  I realize that there are as many opinions on this as stars in the night sky but thought I would ask anyway.  Been considering a Threshold S/500, Levinson 23.5, Bryston 4B family.  Any standouts that I should try to find?  Let's hear from you.
mjt_tx
+1 on McCormack amps; you may be able to find a DNA-1 with a recent gold-upgrade in your budget.  I had mine upgraded 6 mos ago and virtually EVERYTHING but the chassis was replaced with new and often upgraded parts and boards.  It is essentially a new, upgraded amp, and Steve is still around for repairs and tweaks.  It sounds awesome; I can't' recommend them highly enough.
I never bought a used amps other than from my audio dealer who accept return for up to a year if something goes wrong.  I did start with used ADCOM, then went to  new Carver Monoblocks in the '80s  and settled with the Krell Class A  stereo amp which I bought in 1990.  Thankfully its still kicking up to now powering my Apogee electrostatics. 

imThorek 
imthorek
Thankfully its still kicking up to now powering my Apogee electrostatics.
Apogee speakers are ribbons, but not electrostatic.
I bought a ML23.5 used and have had it for 20+ years so far. It is now in a second system but sees moderate use still. Running perfectly and recently picked up a full set of caps to overhaul at some point when I can do without it for a bit. It was the basis to moving up to the 3XX series, where I did not have nearly the same luck.