Why not go for one of those M-audio's USB midi controller keyboards? For midi, there's more to consider than just having a midi-out on the keyboard. There's the issue of controllers - knobs, faders, mod wheels etc. The PSR-175 has none of these controllers. Makes your midi programming frustrating as you'll have to use the mouse - which I believe you wanted to avoid in the beginning. There's also the issue of touch - the cheaper keyboards sometimes have inconsistent velocities which you don't want when you sequence - otherwise you'll have to edit note by note. The Oxygen and Radium series are pretty good (M-audio). If you want more keyboard range, Radium 61 is good. I have not tried the Keystation 61es - I have some personal issues with the Keystation Pro 88 (mainly with velocity inconsistently) and I'm not sure the 61 has the same problem being in the same family.