I use to own an xp-30, my buddy has and XP-80. I used my XP with a MS-2000r for awhile and the XP couldn't keep up without turning down the ms2000r to nearly inaudible decible levels just to here those crappy ROM drums sounds come outta the XP-30. I sold both those synths cause the XP-30 wasn't powerful, and the MS-2000r didn't have enough polyphony/multitimbrality. So... I have my opinionated information and use guys can keep using Roland products. Have it your way.
But hey, you guys are right, and i'll just continue using the "other" stuff.