Cass,

Never tried those other Roland you mentioned, but the 330 is really remarkable for the price. I think it has a full sound and can be as mellow as you eq it. I like the 'body' it gives my overall sound. Bose, to me, was very good, clean, crisp, etc, but I do believe (at least my ears) that the 330 is better for the keyboard player that runs stereo. I'd imagine two units would be incredible, but unlike one Compact, one 330 is enough. And I'm not bashing Bose......