I love mine although I only use it as a very handy and effective drum machine which I use for practice with my organ and for rehearsals when we don't have a drummer present. I use the FC7 foot controller sitting atop my organ pedals to control start/stop/fills. I also have it midi'ed to my VP770 which sits atop my organ. This is to have access to some of the BK7m's internal voices if needed (although most of my non-organ voice needs are covered very well with the VP770 which contains several Supernatural voices). It works very well.
Purchased it from our friend George and it's been rock-solid in terms of reliability (and that's with daily use).
The sounds are typically Roland and don't seem at all dated to me, despite it's 7 year age. Control and ergonomics are fair if you can tolerate a data wheel. I have a ton of Roland gear so I've learned to tolerate the little demon
. If you can find one for 500.00 or less, it's a great bang for the buck if you're in the market for an arranger module.
chas