Emu XL-7 & MP-7 User's Group

I'm picking up an XL-7.  Although I'm not into dance music I got a 
great deal so immediately want to expand the ROM.  Is there a 
cheaper source to buy than EMU's site right now?  Please no flaming, 
I know their site is reasonable.  I've checked on eBay and don't see 
too many used ROMs.  I almost got a ZR for $75 but backed out at the 
last minute.

I'm interested in composing pop, R&B, jazz, etc.  I'm leaning 
towards purchasing the mo phatt and the pop collection.  Is the ZR 
better than the pop or vice versa?  Any other rom recommendations?

TIA