I have Cakewalk Guitar Tracks Pro recording software, and I want to be able to add to my recordings. I am new to the world of MIDI instruments, and I was wondering which item would be better for me, the MPD18 USB/MIDI Pad Controller, or the CME M-Key 49-Key USB MIDI Controller... Do they come with software I can record with or can I still use them with cakewalk. Also do I need to by any cables or anything or do they come with them? I know they are both different things, but which one do you think would be the best?