Thank you for all your replies. For my needs, all would probably work fine. I'm mostly into ballroom music, 60's rock, slow beats, jazz standards and Latin music. Back in the 90's I was using my MC-50 MkII for creating backing tracks, but with the BK-9, I don't even bother with the MC-50 anymore.
Now that I got this Windows 7 laptop with a working Cakewalk Pro 9 on it, I connected the BK-9 to it, and it recognized it. So I said let's give it a try, but I was interested in what you are using.