The Axiom Pro 25 from M-Audio is an extremely powerful USB MIDI controller that features 25 semi-weighted keys, a useful set of trigger pads & controls, and custom software called "HyperControl" that runs within the device itself that automatically maps its hardware controls to Pro Tools and other popular DAW programs. 
 
Feature :
 
Internal HyperControl Software for Ultimate DAW Integration
Expressive 25 Key TruTouch Keyboard with Assignable Aftertouch
USB Bus-Powered
8 Velocity-Sensitive Trigger Pads
8 Rotary Encoders Send Out Many Kinds of MIDI Commands
Dedicated DAW Transport Control with 6 Illuminated Buttons
Ergonomic & Responsive Pitch Bend and Modulation Wheels
Multiple Function Buttons for Accessing Menu Pages and Various Other Features of the Axiom Pro
Octave Shift Buttons for Data -/+ or User Defined Commands
Map QWERTY Keystrokes to Buttons for Copy, Paste, New Track, and More!