I love Geist. It's fantastic for sampling stuff in, mapping it to pads and whacking out some crazy drum patterns. The interface is a lot better than Tremor, in that it doesn't spaz out and insert multi-hits when you clicked normally not clicked and dragged, and it shows you with numbers the velocity and so on. It also looks very professional and pleasing. So what's wrong with it? It crashes. Preeeeety often. I've lost work to those crashes and I'm bitter.