Best keyboard MIDI controller for producing in Ableton and learning piano.

Hey all,

I'm looking to grab a MIDI controller that has the look of a keyboard that will be best for recording and manually dialing in notes/chords in Ableton, as well as serve as a serve as a tool for learning piano. I'm interested in learning Piano soley for the purpose of producing better, and I figure that I'll just hook it up to Massive/Sylenth with a piano preset whenever I want to practice on it as a piano itself.

Can you all throw me some recommendations? Under $250 is ideal.

If you want to practice for piano, make sure it has good quality full size weighted keys.
And as many keys as you can fit comfortably in the space available.

either an mpk 88 has weigthted keys, launchkey has launchpad buttons. etc.., also depends on how many keys you want