hi, thanks for your replies. I do know that there are 76 key arrangers but i prefer the sounds/features of psr9000 or solton x1. Can someone comment on the keys of solton x1 in particular? are they semiweighted keys/full size keys? are the keys of psr 9000 better than 8000 ?

How easy is the solton x4 module to use? midi capabilities with an yamaha, korg or roland keyboard / controller ? anyone knows the selling price (not the retail) of x4 ?

also, can someone tell me how easy is to tweak the sounds in solton x1?

thanks
ram