Yes to all the above (except the big band question - I like 'em, you'll just have to see for yourself)

Nothing short of an extended audition is going to be of much use in helping you make up your mind, I would hope, though.

And be prepared for the fact that Roland do a lot of things differently to Yamaha... No multipads, no break/fills (just break/mutes), no audio recording or playback, no speakers, and a VERY different OS.

Once you are used to it, the plusses - the 'live' sound, the toned down styles (more room for you to show what YOU can do, not the arranger!), the incredible piano and organ sounds, the amazing key-bed, the V-Drums, the touch-screen, can start to influence you.

But be prepared for a whole lot of 'Why'd they design it THIS way?' changes to your Yamaha-trained reflexes.

Oh, and make sure any G70 you audition has the OS3 styles and OS installed. Night and day to previous versions.

Take your time, and don't expect it to be ANYTHING like your Yamaha.... Good AND bad....

Have fun...