thanks for all the info

i didnt realise the g11 had more macro buttons and i was under the impression that i could change the colour of the g15 lights, after checking again tho it seems i was wrong

looks like ill be getting a g11 instead as the screen would only be a novelty and something extra that could go wrong
Original G15's are blue, with a black and white LCD panel, which is handy for World of warcraft, it can show character stats, info about battleground, whos' been whispering you, ammo supply, plenty of good stuff etc.
The G11 is a cut down version of the blue G15. The G15 was revised, has less keys, and an orange LED screen to replace the LCD. It's still a nice keyboard, and takes a little less desk space than the blue G15.
Both are excellent, and as for something extra to go wrong, Logitech have great customer support in general, and if it does go wrong, it wont affect the rest of the keyboard.
While its true the hub isnt powered, it still can supply the standard USB power its enough for my mouse, and my tomtom charges happily from it, as does my iphone. So really the lack of power supply on it is only potentially an issue for say, and external hard disk mebee? Its not like the keyboard has a gazillion ports on it, anyway.