integrated or seperates?

I'm currently using a Classe CAP151 Integrated amp with an AR CD2 and Apogee Slant 6s. Would I improve my sound scape (width & depth) by changing to an AR combo (SS) like an LS3/D150.2 combo (that I am eyeing) or would money be better spent for power condtioning? opinions from users would be of grat help, Thanks.
Soundscaping is genrally the reason to get tubes. Although the Pass XA series does imaging pretty darn well. Are you dead set against tubes?
tubes would be great but... heat is a factor for me in the smaller room I have ans well as the upkeep for tubes. Sorry but I am more comfortable with Solid State as I listen to soft rock, blues and some jazz.