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
Was picking up a really nice set of speakers from dealers home in Malibu…. while his preamp was a top of the line ARC, his choice of amp was Quickie….

Nice….
Buy the 120 monos and be done.  
Buy once , cry once is what I always say. 
In response to reliability and service...   I have had a few tube failures... it happens.   The first time I called and Mike answered as he usually does and told me not to worry , probably no damage just replace fuse and isolate bad tube He was right, these amps are super reliable.  Mine have many many hours on them. I listen every night for a few hours.  All weekend long.  They see a lot of use  A LOT.   I only paid $1050 used,they were a little over a year old but honestly I would gladly pay $2100 for these amps new and still feel like it was the bargain of the year.