I love my BK-9 including the Makeup Tools to edit rhythms and SMF files, but it has not the style part the G70 had, like Don said.
It takes a little time and work, but easy enough when you get into it. I think the BK-9 is a sleeper in that the marketing has been terrible(typically), and deserves much better.
If they would have added the whole integra soundset.. and a color touchscreen interface, they could have asked double the money and have a huge hit
I think the G70 is 10 years old, and is probably the only arranger still popular after all that time.