There are lots of options now, but I really like the E/MU command stations. They have 16 knobs, a full scale of velocity pads, 16 "buttons" that have rounded edges so you can "swipe" across them turning them on and off (in groups if you desire), and 16 programmable arpeggiators that can be triggered with pads, buttons, or knobs. You can get 'em fairly cheap these days, and you don't even need the expansion boards that come with them if you are only going to use softsynths. So if you don't need sounds from the unit, you can buy one, and sell the internal board and just keep the unit for use as a controller. Also, has a 150,000 note sequencer with 16 tracks!!! :cool: :rolleyes: