For anyone needing a hardware controller but can't find one that does what you want, check out the MIDI CPU by HighlyLiquid. Its a little hardware logic board with solderpads to connect any variety of input devices (buttons, sliders, etc). Then you program it to send whatever MIDI commands you want. Basically, its a customizable MIDI controller. Its not a replacement for a SoftStep, but I use it as a supplement for some controls, and its working out great. I have 23 controls on a little box the size of a deck of cards, right next to mixer. Between that and the SoftStep, I can control most of the known universe.