BTW, the Black Dynamite soundtrack is killer!
I really suspect that the difference between a tube vs. solid state power amp is nearly impossible to recognize in a home audio system. There's so many variables in the room that can hinder your listening experience, and far more likely to present audio problems then your equipment. Unless you know where to place bass traps and which reflective surfaces to disperse (and there's a whole science to that), the big differences in the power amps will be the knobs, dials and functionality of it (i.e. if it's surround sound, what sort of line outs you have, etc.), how many watts your amp has, and how long it'll be until it breaks down.
There's a great video by Ethan Winer that kind of addresses this stuff:
YouTube - Audio Myths Workshop It contains a bunch of interesting info, and may save you alot of time and money on buying equipment that doesn't really do much to your sound.