You are on the wrong track. I have heard both and preferred the Simaudio on Verity speakers. But those speakers allow low powered tubes and that is where you should go with them.
Which amp to drive Verity Parsifal Ovation Monitor
I am considering purchasing either a Simaudio 600i or Pass Labs Int-30A to drive Parsifal Ovation MONITORS. I use JL fathom powered subs to augment the monitors bass response. I listen at moderate volume levels in a medium large room (26x16). I currently use a cj CA200 int amp and am thinking of switching.