I actually bought the USB and returned it after about a week and got the 4000s. I tried plugging it in to my MacBook and the Aria player worked fine through midi.
Degree in jazz studies from Shenandoah University. Played sax, flute,EWI, clarinet professionally for 14 years. Just picked up the 4000s (after returning an EWIUSB) to replace my broken 3020. I started with the EWI 1000, then bought a 3020 which I played for years. The 4000s is my favorite by far.