Which Keyboard Controller for P5 ?

Just received my copy of P5 & mailed off the paperwork to get the free P5v2 upgrade. I quickly decided I'm going to need a keyboard/surface controller combination. M-Audio has a number of them (Oxygen8 & O2) and the Evolution (MK-425C& MK-449C). I don't necessarily need the MicPre (in Ozone & Ozonic)... I'm sure I'm missing some other keyboard controllers with some desirable features, so let me know about them. I'm also using Sonar 4 Producer.

Thanks for your help... glad to join the P5 pack.

David