This may be one for the pc bods - however this is a great keyboard and is the cheapest I have found! (yes I know it is expensive for a keyboard!)
Web said out of stock however I phoned store and they had one left.
The Logitech 967685-0120 delivers the ultimate in feel & response in a ultra stylish sleek design. The TouchDisc unifies scrolling, selection, and cursor control, scroll at hyperspeed with one touch!