the few people I Know that have had the BK7m Uncle Dave, Deane have now sold them for many reasons........ I'd seriously try one before you buy it...
http://www.roland-arranger.com/ I have
three new clients, who went from buying, trying (and returning)a BK-7M, and then purchasing a Yamaha PSR-S910, and two PSR-S710.
The main reason for returning the module was that it was not user friendly, and required a lot of time, effort, foot switches, and, although it
sounded very good and had
some excellent styles, it apparently was just not worth the effort. Some had them for several weeks, and were still not able to get it to work
as needed.
Personally, I think Roland had a
potential goldmine in this module, IF (and that's a big "if" as you can see) they had made it much easier to use and far more operator friendly. It is quite probably a fine module for those who have the
time, patience, and lots of third party help to get it up and running. I actually entertained the thought of getting one myself (to use with a digital piano) but after reading, both here on SZ, and on other forums, about the issues most users were having with it (and the subsequent returns), I thought better of it, and will wait to see if they come out with a BK-7M Mark II, BK-8M, or whatever they will call it.
If they are planning on basing an arranger keyboard
on this product, perhaps they will take what they have learned from the former customer's (and present user's) complaints, and make it a far easier, and ultimately better, instrument to use.
Ian