When to go solid state vs. vacuum?

I am looking to upgrade my system into a good 2ch system (hopefully adding vinyl playback) but also being able to do nice HT sound.

I am currently working on new speaker considerations but it may be likely that they will benefit from a dedicated amp....how to choose which type and which one?

I have an integra dtr40.1 that has some very nice features and can function as my pre-amp, and using it that way may be a good place to start. That said, I am new and ignorant to most things regarding standalone amps. Where are vacuum tubes appropriate and where are slowed state appropriate? I have heard both and at least for music I prefer the vacuum tubes, is there any reason why they can't ideally be used for HT as well?

I realize this is a bit of a nebulous thread but I need a starting point.

Thx