Hi, greatings from Brazil !!!
I'm a user of Roland's Synts and very suspects to talk about another vendor...
My set is about 2 synths and 3 modules from Roland. I don't like the sound of Alesis and Ensoniq, I think Roland is more fat and clear.
I have a XP-80 and a SC880 the PCMs is very simillars but XP is more fat. SC haves much more patches than the XP non expanded.
If you are looking for a sound generator for only sequences, buy a SC880. It's more easy to operate and so simple to receive dumps of sets for any midi file.
The XP is more simple to live performances.
Best Regards.