Just a minor correction here, but while older Roland's had a 128 entry Performance List, and the EA7 went to 100 or so, the BK series had a 999 entry Performance List, which is a LOT more practical for the working musicians, where 128 songs total before you need to faff around with the menus to load a different Performance List isn't NEARLY enough!

I'd say that the differences between BK9 and BK7-m are highly significant (I have both). And unless you actually DO a significant amount of highly detailed style creation and editing, you're going to be unlikely to care much about that one particular difference.

But the SN voices, the VK organ section, the Chord Sequencer, and the massively larger displays make the 7m very much the 'baby brother'. Not to mention, no mic input section, no Key Audio, fewer MFX, and fewer control inputs amongst many other differences.

To the casual user, some of these maybe missed until you end up needing them...

I'm completely gutted that Roland never used the BK9 guts for a more advanced module. Add back in my favorite BK9 stuff, it would be a powerhouse module even to this day!