Logitech Touchpad T650
Although we can't in good conscience recommend Windows 8, if you get Microsoft's newest operating system, do yourself a big favor and pick up the Touchpad T650 trackpad to go with it. That way, you're not uncomfortably reaching out to the screen in front of you -- a possible ergonomic risk. Instead, you use Windows 8's gestures on a desk surface, where your hands already are planted for the keyboard and mouse, similar to how a Mac user would use Apple's $69 Magic Trackpad.
Product: Logitech Touchpad T650