I had a look at one of these the other day, i'm quite impressed on how the keys felt.... really nice touch. Plenty of features too. Comes in 25, 49 or 61 key length. 49-key velocity-sensitive semi-weighted action keyboard with assignable aftertouch 8 trigger pads, 8 rotary encoders, 9 sliders, 15 buttons (including 6 reassignable transport buttons) 15 function buttons and backlit LCD screen for total front-panel programming built-in USB bus-powered MIDI interface including standard MIDI In and Out jacks 20 non-volatile memory locations; compatible with free Enigma librarian/editor software You can read the rest here