has anyone tried the "keys of the 60´s and 70´s"-expansion? please just write to me about the quality of the patches.

I've just resently bought an xp60 with "Keyboards of the 60's & 70's" & man it's awesome. If your into your Hammand B3 type sounds (Like most keyboardests are)definatly try this expansion board. (Also try assighning the rotary speaker speed to a foot
pedal this frees up you hands.)