The Axiom 25 uses semi-weighted keys that feel and play with a great feel, and and will be a big step up for producers used to synth-action keys looking for a better feeling keyboard. The *only* downside is that it only has 25 keys, and you must use the transpose buttons to go up and down octaves. This is acceptable for the size and great value of the keyboard.
Setup for the Axiom is easy, using the included CD drivers takes about 10 minutes and is very straightforward. The included Enigma software enables users to customize and load presets that are designed to work with their favorite DAW (e.g. Logic,Reason, Cubase). I found that I didn't need to customize anything or change any settings on the Axiom, and was making music with Reason 3 right out of the box. The manual is only available digitally, but it is well-written and thorough.
I have used the Axiom 25 almost every day for 2.5 years and feel like its been worth every penny. The fact that it's so lightweight and portable makes it a great keyboard to own. It was my first MIDI keyboard and my experience with it has been tremendous. I would buy another one in a heartbeat. For only $179 USD, the Axiom 25 is a great value for the computer-based mobile producer, and I would recommend it to anyone looking for a portable MIDI keyboard.