Hi all, well its been about over a year now and still happy with my Axiom speakers. I have made a few changes to my original set-up and not sure what to do next. I love my system in HT, but in music I wish the sound was warmer and more dynamic or had a depth to it. Based on $300 low end and with some time $600 top end what change should I make next to get this depth and warmth? My current system is as follows....

Axiom M22ti's Front
Axiom VP-150 Center
Axiom QS8's suround
VMPS Original sub with all bells and whistles
Yamaha RX-V2300 6.1 Reciever
Rotel RB-980BX Amp Bridged mono to the sub
Cheap Toshiba DVD player
Sony PS2