I am currently using a G11 that i have been using for a few years now, the only time i didnt use it was when i was using a KVM switch to use t2 puters with 1 set of keyboard/screen/mouse but it sucked so i got a cheap mouse/keyboard and a new monitor and rigged them up seperate, makes the desk look cluttered, and typing on 2nd screen can sometimes get confusing.
Onto the G15, it does sound more interesting than the G11, can you get profiles for UO like you can for other games? with the G11 or is it the same keyboard, with a screen?