I just got a Logitech G15, it is amazing. I'm coming from a saitek eclipse. Unlike the eclipse, the backlighting is equal on all the keys. On the eclipse, it would start bright in the middle, and get dimmer as you moved further out. Backlighting aside, the other features it has simply outclass the eclipse, pure and simple. The LCD screen is programmable (it's actually it's own platform). The macro buttons are even better. Now, in UT2004, instead of having to double tap one of the movement keys to perform a dodge, all I have to do is press the macro key I set up. You can have as many key strokes in a macro as you want, and you can customize delays (set the time and everything) between each keystroke. All in all, it trumps the eclipse. But you gotta make sure you have room for it, it is big. Also, it is heavy (which is a good thing).
so, umm, err yeah