Tek's right.

But I would also recommend Korg stuff.
I still like their 01R/W and 03R/W modules.
I still have an 01/W, 01/W FD and an 03R/W synths. Samples are a bit short, but they work well in the mix. Korg also has better voice allocation and a very bright, punchy sound.
Roland stuff is not bad either, but between you and I - I'm not a big fan of their XP, JV stuff. They sound a bit thin and the sounds don't work in the mix that well.
But that's just my opinion.

-ED-