I am the proud owner of two Roland XV-88s.

The XV-88 is Roland's flagship synthesizer. It features 128-voices of powerful XV sounds, an 88-note precision hammer-action keyboard, D-Beam controller, and expandability via 64MB* SRX- and popular SR-JV80-Series wave expansion boards. Add to this a host of studio-quality effects

At one time (2000) this was their flagship model, and it's got a lot of onboard stuff.

My only gripe is that the cards for the optional expansion slots (2 for the BIG cards, and two for the OLD smaller cards) are still just as expensive as they were 20 years ago.