LOL...kinda of hard to help you here...
You say "something's missing (musically)" but,
If you can't pin point what's missing yourself,
Then how do we help??? Especially if HT is "epic"!
I will throw out a few things...
You don't say what your music sources are?
How are they being delivered thru your system?
Dude...sounds like your room is an acoustic
Nightmare...as in Reflection City!
I've learned here that the 2 biggest factors in what
We hear are..
1) the speakers
2) the room they are placed in and how the
Speakers react with that room.
Everything else is relatively minor.
Expensive electronics are not going to cure a bad room.
A superior room correction program might help. (Audyssey?)
You probably need to find out what is going on in
Your room. There is a free computer program called
'REW' that can tell you a lot. People here can help
You analyze your results.
If you start changing speakers 'willy nilly' with out
Understanding what's going on in your room you could
Be in for an expensive and frustrating excercise in futility!