yeah, i got one about 2 years ago - i got a custom low G model, fair bit more expensive but it was just after christmas and my money at that time wasn't being spent on anything alcoholic or chocolate based
they're pretty nifty for their size. they are in a way similar to the recorder but they play much more like a sax (they take tenor sax reeds although some have suggested alto or even bari sax reeds work better). the sound from them is phenominal, you can playing brashly like a sax as well as the chilled out, voice like clarinet sorta sound.
dynamics are pretty widespread too, the lower end being easier quieter i've found with the reverse true at the top. it's range is pretty nice too - i can get 2 octaves + 5th on my G model although for the smaller ones the upper end is limited by the reed (eg the pocket sax, the plastic one in C, will probably only go up 2 octaves from its lowest note). the other important thing is their durability - mine is very solid indeed and despite being thrown across the room on occasion it is still intact.
so - it's a worthy investment, although you have to remember the xaphoons are essentially, without putting them down (the guy who makes them is very talented), handmade bamboo instruments, but they are, in the right hands, on a par with the other important woodwinds (fl, ob, cl, bsn, rec, sax).
he's got some recordings on his website (stick xaphoon into google) if you want to listen to a xaph being played properly...