A couple of years ago I began my sax journey the cheap way - why buy a sax when I can get a Xaphoon?
'Orrible thing! IF you can play tenor I am sure it is a great little instrument to have around.
Sold it on ebay last month.
You're right Pete. It's probably only obvious when you've played a few different woodwinds.
Also, simpler instruments are generally designed for simpler music. It would be masochistic to play the Brahms concerto on a clarinet from Mozart's time. So you shouldn't expect to be able to be able to play Giant Steps on a xaphoon. OTOH it wouldn't surprise me too much if both have been done. I've heard Coltrane's Giant Steps solo played on recorder.