I bought two SD2's. One is used for midifiles off my laptop, and the other is used with OMB with my Axiom 61 controller.
With sounds from the SD5 engine, I think it sounds fantastic. The loops,downloadable from Ketron .it are excellent also.
pa4X 76 ,Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station