I'm a podcaster and a sound designer and I am interested in purchasing a midi keyboard that I can use to manipulate samples. Does anyone have any experience with Midi keyboard hardware, or software? Whats accessible and what should I take into consideration? The ability to control and manipulate any audio that I create, is the main function that I am interested in. I use my mac for all of my audio editing, and it would be very much preferred if the keyboard worked with some app on OS X. I might consider interfacing with an IOS device, if I have no other options, but I hope that won't be the case. Thanks for any feedback.