I have the Radium 49 by M-audio, this is perfect...it has usb and midi plus 9 sliders, modulation and pitch bender with all of the standard buttons for assignable fx......with the availability of sounds, samples and software this baby kicks ass....I had keyboards but had to liquidate all of the hardware I had now I am building it back up....but I think I will stay with the controller......back in the day I used one of those older quick shot controllers that came with cakewalk home studio but I used to use pro audio 9 with it to control all of my gear then........anyhow I think the keyboard might be limited with the soundset, I grew tired of my Motif and Triton LE sounds.....working with a controller gives you access to a lot more sounds and samples because it is only limited by what you have on your computer.....like samples, soundfont collections, VST and dxi plugins...