I'm from those peoples, that gained experience little by little. More and more. By trying, compairing, and try to understand the logic behind the things I tryed to understand. And the more I gained experience, the less I was focused about the "sound of amplifiers". As already written in this thread, for normal home use, for a good speaker that isn't asking for exhorbitantly low impendances nor highest peak of current ; a lot of amps, crafted honestly will work in the same way.
I'm, anyway, using a high end pre+power combi from accuphase. But not because I believe it will change the sound completely. But because I like japan, I like the peoples there, I like well made electronic and like sturdy things. I believe electronic can be a form of art. And in this case, it's electronic nearest to the word "art", as it can get.