Are Quicksilver power tube amps in the same league as VAC, VTL, BAT, ARC, ...?

+1 @ knotscott

VTA is very good w/ great customer service. The VTA ST70 replaced a highly regarded high power amp. I am surprised at how good it sounds especially for the $$$. It is a bargain and a helluvan amp. I've had the 70 & 120 The 125 monos should have the same rich sound.

It appears that I can't be wrong with QS monoblocks and I need to get at least 100 WPC amps.

@i

Yes you can go wrong but not due to the quality. Again, unless you are nearfield or in a smaller room, 100 watts on a speaker that's only 87dB in an average room won't be enough power. I would seriously consider replacing the speakers with something more efficient if you plan to work with an amp of only 100 watts. Otherwise if you try to push things a bit, if you want to rock out, you'll run the amps out of gas.

Think of Primaluna. The best value for money. 

I've got a Quicksilver tube headphone amp, and for the money (under $1000), it is excellent!! Sounds great and very well made....

I was thinking of 80W Quicksilver monoblock, but decided to go for more power.
My solid state amp is Plinius SA102 (class A 125WPC). Plinius works quite well with Gershman Grand Avant Garde (87dB). I listen to fairly loud and I don't feel lack of power, even though Gershman may enjoy more power. 
My room is not huge (about 15' x 7.5' x 30'). I sit about 10 feet from the speakers.
I contacted Mike Sanders and he said that they will have a new 100 WPC monoblock amps available in October. I am thinking of going for that amp, unless I find some sweat deals for used mono 120 or V4.
Thanks again.