I have been moving in a more simplistic direction for some time. This integrated (Sonic Integrity MP5) only has two inputs. This limits my sources and makes sure I don't buy new equipment without really thinking about it first.
Because the amplifier is so low in power and my speakers aren't exactly super-efficient, I use the two powered subwoofers crossed over at 150hz to carry the bottom end.
I am pretty well finished for now. I like the way things are going and how good it sounds, considering the small amount money I have spent.