I think Ketron's blowsax is the best I've heard so far. Ive been using my pa500 through an sd2 and the difference in saxes as well as most everything else is striking. And with this setup the sd2 in on a shelf in my rack where all cabling is unseen. I run a stereo, power, and midi cable harness to the rack. No odd looking piece of equipment and associated wires on top of the keyboard. I have the styles I need for what I do, the option to use Korg, Ketron, or both sounds. The sd2 price is modest to add such flexibility. I understand the Yamaha Tyros line post T-1 (and others?) have a built in patch to use an sd2 without problems.