Shahinian Obelisk vs VandersteenTreo

We just Got in the latest Quicksilver 120 WPC mono's 2 KT 150s per side
with Ayre Dac, ARC Pre in front.
Could just be what the dr ordered with the Quatro's CTs Hi Passed running 100HZ up with the feedforward message these new Quicks are sending into the tunable Quatros powered bass section sound is really growing on me ......
 JohnnyR
 

I went with a pair of Atma-Sphere MA-1's and MP-3 for my Treo's and couldn't be happier. In fact, it is my reference system. I never had tubes before, and this combo is certainly ̶o̶n̶e̶ ̶o̶f̶ ̶t̶h̶e̶ ̶f̶i̶n̶e̶s̶t̶ , no the best I have ever heard.
And, I also have a pair of upgraded DNA-1 monoblocks from SMc Audio, and a pair of Ayre MXR (non twenty), so I could play around.-Those tubes get too hot for the summer.
Bob

Gentlemen,
Thanks for your input. Quicksilver and Atma-Sphere don’t sell here, so I can’t try them.
I can get some ARC gear here, Line Magnetic, Rogue Audio, etc.
I am cautious about ARC, though, due to bad experience with their integrated - CA50. Had nothing but problems. Others aforementioned, as I understand, are entry-level tubes, made in China.
Manley is nice, love their Stingray, but on the expensive side.
What else have you had experience with vandy- and tube-wise? McIntosh? Like MC275, plenty of them around. 
Thanks!

Jazz
 Zero Feedback w High passed Quatros is the blueprint for best performance many will work Ayre, Aesthetix, Atmosphere Bat, the Quicksilver new120 amps have superb transformers are Made in USA hand wired without circuit boards, run cool 4395 w Russian KT 150s You get what you pay for.
 Manley hi feedback at their best controlling multiple woofers, which you don't have.
 You need a fineness amp with Zero feedback 100 HZ on up a pre-owned Ayre V5 zero feedback would be sweeter and alive on Top and better than tube amps with Hi feedback and dumbo dark transformers.
  Best JohnnyR

Johnny,
Thanks.  These brands are not too common here where I live, but the blueprint is clear. 
What WPC is a good starting point?
Thanks again.