I am going to get one of the 2 and they both look pretty good. the most important thing is the illumination. At the moment I have and articosa and not having a backlit keyboard bugs me when playing in the dark.
the features I like on the Logitech are the USB, and audio jacks built in it, and on the microsoft I like the cruise control button (a lot) and the removeable number pad is kind of neat. My setup is red so the color of the light isnt an issue, im just having a tough time deciding.
Also, I can't decide between an ASUS Xonar DX 7.1 or Creative X-fi Titanium, any ideas on that?