I agree with Oscar1
I purchased one but returned 2 days later: to me, is a toy.
The Roland Styles are very, very good but the BK-5 sound is weak. It can do a lot of things but as It doesnīt have dedicated buttons for most of those "things" (fade in-out, arranger dissengage, you canīt disable upper1 voice, etc) theyīre hidden in sub menus. Not practical for live playing in a gig. Well, at least, itīs what I think.
Iīm still waiting for a G-70 replacement