Excellent review from Dan Frakes about the Logitech Solar Keyboard.
I've used the K750 on my Windows machine for almost a year. It replaced a Das Keyboard and I have been very happy with it. This new one looks perfect. I won't lament the lack of the Logitech Control Center like Dan does. I've got Keyboard Maestro and LCC is an abomination. One of the only controls that ever killed a Mac when I upgraded the OS (Snow Leopard if I recall correctly).