We didn't (or at least I didn't) set out in this thread to pit Yamaha against Roland, so I'll stick to the topic.
I still think the BK-5 smokes the G-70, which really isn't a bad thing. I'm not saying the G-70 sounds bad...it still sounds pretty good, but it is all the bigger the achievement for the BK-5.

In my opinion, of course.
Ian
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.