I had one and in general I found it handy, I just wish it had a bluetooth function to allow for cordless headphones, the lead trailing form the 3.5mm socket to the headphons sometimes gets in the way when you're playing. Also the headphone socket is flimsy and starts to give trouble eventually. The aux input is really handy to plug in an MP3 player or whatever to play along with, again, this will give trouble.
in short...wireless please.