Inna, in the "real" world, this is what I'm looking into. While I want the best "tube" pre amp I can possibly swing, I know that a really good solid state amp will give you a lot of the tube thing, when you have a killer tube pre amp.
This Vincent Audio SP 331 Hybrid Power Amplifier; 150 watts at 8 0hms, and 300 watts at 4 ohms. Since I'm running my speakers at 4 ohms now, I would be able to use that.
http://www.audioadvisor.com/prodinfo.asp?number=VISP331
I think they would let you audition this amp, with the usual provisions.
Enjoy the music.