Hi Rolandfan,
too far back for me to remember. Just realized it's probably closer to 6 years since I actually had a g800. Time sure flies. I also didn't have both units at the same time. What I mainly remember is that it had added features, that the e86 didn't have, mainly to do with style & sequencer editing I think.

I'd be inclined be guided by what uncle Dave has to say as far as sounds go.

best wishes
rikki