Well, I have something more te tell:

At the demo at Musik-Produktiv at Ibbenbüren (Germanny) was Ralf Schink playing and he did a GREAT JOB!
The G70 had some problems and it is caused by a mechanical problem :
Pushing the intro-/fill-in buttons area causes the Printed Cicuit Board to bend a little and shorts electronic circuits....the reason why G70 reboots.