Help Tube Power Amp Recommendations

I third the Plunas.

The rule of thumb on impedance is you want the input impedance of your amp to be 10x the output impedance of your preamp.

I don't know if they meet that requirement, but I recommend the Primaluna amps. They have soft start and autobiasing to keep your maintenance minimal, your tubes sounding their best and living their longest.

The AES Super Amp's are nice, for about your budget you could use the 'power amp' section of the Eastern Electric M520, it really sings under that scenario...many, many options out there. Listed right now is: nice CJ MV55, pair of Primaluna Prologue 7's, a nice Nelson Image that uses KT 66's (I have the integrated version of this amp, and it is as musical as they come!) and is alot less money than you're looking to spend (but will be tough on re-sale being that it's an unknown quantity here in the States--it truely does use all audiophile components).

I'm sure there are a lot of other good used ones.
Good luck