Seeking more 3d imaging, deeper/wider soundstage


I'm considering replacing either my amp or my pre. My system is profiled in my system link. Which do you think would improve soundstage/imaging more:
Replace the P3? I'd consider used McCormack, or a passive line stage, but my amp clips at 5v, which is what my DAC puts out when using the XLR outputs, and I'd like to try those someday...not sure a passive is a good fit for my system? Plus I require a remote. That's a deal breaker.
Replace the Rotel RB-1080? I'd consider parasound (a21 is a bit too pricey for me), used McCormack, odyssey, maybe even older krell or classe. I want XLR inputs tho.
Budget is $900-$1200 for either. Music spans the full gamut, excluding hip hop and country. Room is small, 12x12x8. I'm going to throw up some affordable foam acoustic absorption this summer (foam factory). Thnx in advance.
realremo
Tboooe - I have 4 tri-traps (2 on each front corner stacked floor to ceiling), 2 244s (one behind each speaker), 1 Monster Bass Trap directly behind my listening chair, and 4 spot panels (2 on each wall) to hit first reflection points. Having a crappy, square room with an alcove right behind the listening position sucked big time ... but the GIK products have fixed that essentially, and I am quite pleased with the sound.
Bobnegi, my listening position is placed per goldern triangle, and don't tell me to settle down, I'll spend my money how I like.
Rlb61, you say you have an alcove behind the listening position? So is your room 10x10 not including the alcove?
Tboooe - I screwed up the numbers ... it is actually 12x12x8, including the alcove. Still haven't had my first cup of coffee this morning; in any event, it's a square box.
Rlb61, thank you. So your room is a lot like mine except the ceiling and opening behind the listening position of my room. given your ceiling height did you consider any panels up there? What about your floor? Do you use a rug?

BTW, are you on the west coast? Its still kind of early out here. I am in Socal.