I have a WX-11. Have had for ~20 years. Have been tempted to pick up a WX5 every now and then. The EWIs are fun and all but the electrostatic switches tend to annoy people. You need to lotion up before you play them or they drop notes. It's difficult getting true woodwind expression with any MIDI instrument. Velocity tracks wrong and none of the slurs et. al that make a woodwind a woodwind really translate. This is one reason why the hard-core stick to the old analog Akais - they were analog synths that output MIDI. They're still funky, though. It's like a Chapman stick - yeah, they sound awesome if you want to make exactly.that.music. If you want to do something with a little more expression, you end up with... well, exactly.that.music. The EWI was, before Akai bought it, the Steinerphone (for Nyle Steiner). This is kind of the pinnacle of virtuosity with one. It all ends up sounding.exactly.like.that.