Definitely worth getting Jamstix - I've been very happy with it. Once you set it up so the 'power' knob is responding correctly to your playing, it does an amazing job of putting down a credible drum track. I demonstrated it to a top session drummer friend and he was most impressed. It's so much simpler than faffing around with loops, laboriously trying to put down tracks from a keyboard or pads, or anything like that.