I find myself on the fence about units like this. These type of magic boxes seem to be blurring the line between live human performance, and listening to a record ... umm ... I mean a CD .. oops ... maybe an MP3 (allright, I'm old!). In some ways, this seems different only to a matter of degree from hooking up an Ipod to the P.A. and playing it while you strap on your guitar and jump around in time to the music. I mean, if you can't sing on key, is it artistically honest to have a machine do it for you? Are stompboxes that correct your wrong guitar or bass notes just around the corner? I guess so, seeing as we already have a Les Paul that tunes itself. Heck, why not a player guitar like a player piano? Something about this just doesn't feel right. Just my $0.02.
Bill, tgo