Diki i think the ultimate combo is a tyros 2 with a Roland or Yamaha Motif module for the live drum kits...

seeing i wanted it in one board i went the Motif XS but now i lack arranger features which really does not bother me.

The G70 has an awesome all round sound but i think that the Tyros 2 has better lead voices in alot of the sound categories (S.ART).

It would be a deadly combo! good luck!

Nick