I was considering getting a used drum machine and discovered I could get a drum machine app for an iPad. Curious to know if anyone has found a great drum machine app for the iPad or would I be better off getting a dedicated drum machine. If so what brand and model would be a good unit? I also have garage band in my apple laptop. I discovered it too has a built in drum machine. I have yet to try it out. What do you fellas suggest I use?