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


I see that VAC, VTL, BAT, ACR power tube amps are almost twice or more expensive than Quicksilver power tube amps at the same power ratings.
Are Quicksilver power amps as good as twice or more expensive brands?
I am considering power tube amps with 80, 100, or 120Watts power ratings and I just wonder.
I don't have much budget (under 5K) and my choice is either new QS or those other brands used.
If not QS, which brands are best bang for the buck for power tube amps?
I need to drive 87dB speaker, so the power has to be at least 80Watts.
Thanks for your input.
128x128ihcho
+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.
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.