I play may s910 at most NH gigs because of weight, but keep my G-70 on hand because of that performer's enjoyment factor. It is certainly the most impressive keyboard I've ever played or owned.

Now, would I switch for BK-9? Hell, I don't even know what it looks like, let alone know any of its features. If, as Fran says, it is really a MOTL at a MOTL price I could be interested. Fran, my #3 G70 is always for sale, as is everything I have. Just hit the right price button.