Donny,

The SD5 sounds better then all of the Ketrons that have come out so far. But the OS is the same from SD1 & Xd9.It has no USB so you have to use that PC to keyboard interface. The riffs so great but after to 20th time of hearing them your going to get bored. I had one and sold it because I simply got bored of it.

Good luck

[This message has been edited by mc (edited 06-16-2008).]