Characteristics that motivated my choice was the HyperControl Technology, the updated version of the best-selling Axiom 25 keyboard -- with a better-designed control panel, 25 semi-weighted keys , the DirectLink mode automatically maps the Axiom's faders, knobs, and buttons to your DAW and virtual instruments that can basically make me forget about my mouse and keyboard. M-audio Axiom Pro 49 has a Midi type of connection.
The general configuration of the program it's very simple, it has a well detailed manual that clears some things out,I like the LCD and its cool features , the pads, knobs, sliders, pitch control, and many cool features.
The manual is quite clear and advanced at the same time, so if you've never worked with an Midi Controller you should check also some tutorials regarding the HyperControl function and the real time playing provided by the product.
What I really like about it is the design, that white looks damn good, I do enjoy the HyperControl Technology, and I gotta admit that those keys feel and look Pro, and another great thing about this product are the pads that are super-sensitive however once you got used to them they can make a huge difference in your drum patterns and velocity dynamics.
Another advantage that has M-audio Axiom Pro 25 is the enhanced DAW Integration with HyperControl Technology that makes possible to just plug-in-play and enjoy the feel of the keys.
The LCD is large and clear and gives all the info necessary for forgetting the mouse and just enjoy the producing.
The value of prices and quality is great, I really think its worth the money because this controller gives all the tools necessary for building a nice environment for a music producer.
One huge advantage of this midi is that it's pretty small and you can carry with you everywhere you need to go, that's why I would suggest buying this if you travel a lot.