Dear @crazyeddy: Problem is that the impedance and phase MAXX2 speakers is totally inadequate for tubes. Can VTL handle the Wilsons?, well it can handle but is not a good mate for the speakers. Those speakers needs the best SS amplifier you can get for can really shows at its best.
What's wrong with the Bryston, what do you want to improve? in any case my advice is to mate those speakers with SS amplifier, the speakers deserves it.
Regards and enjoy the MUSIC NOT distortions,
R.