Xpantastic!

I sold my Matrix-1000 years ago – sounds like a distant cousin of the Xpander, so not really an option.

The suggestion about copying a patch to six voices, then detuning each, is a great workaround for the lack of individual voice detune (on a single patch). I think that's available on the Matrix-12 but not the Xpander.

Thanks to everyone for the responses.