Lcherepkai,
If you can find something wrong, then something is definitely wrong, because normally, even when you can't find anything wrong you can always substitute some piece of gear here or there that will make an improvement and probably improve on if not fix the defficiency entirely.
I don't know how to advise you because I don't know how large your room is or how loud you like to listen. I too have some interest in the Valve Audio Predator, and the Pathos may also be a good choice.
In my own system, the best amp I've heard lately with my Magnepan 1.6QR speakers is the discontinued QuickSilver GLA tube amp, which narrowly bested my PrimaLuna Dialogue Two, which sounds very similar. But my feeling is that I need more power with the Maggies, so I'm searching for a more powerful amp too. I have an order in for a pair of the TAD Hibachi mono amps, but won't know how they fare until I try them out in a few weeks.
If the Hibachi's don't work out then I may stay with the GLA and just watch the volume. I have EH KT88's in it presently and it sounds quite impressive. The 4 KT88's are spaced fairly wide apart and the amp runs warm, but on the cool side of warm for a tube amp.