I highly recommend mine.
It's a Logitech K750 Mac Edition, but they make them for Windows as well.
Link to Windows version here
Major Selling Points:
-Wireless. It uses Logitech's Unifying Receiver, which means that it's not Bluetooth and takes away one of your USB ports. However, I have had no problems with the wireless connection using it.
-Solar Powered. No need for batteries, this thing will charge and run off of a simple lamp or overhead light.
-Low keys. This allows for smaller key travel distances and (might) increase your typing speed and efficiency. I know I type better on a keyboard like this than one with "normal" keys.
-Extended Numberpad. For work and stuff, it's handy to have if you need to mess with lots of numbers like I do.
-Relatively cheap. I picked mine up for around $50USD, but I've seen them go for as low as $30USD.
Perhaps not the best gaming keyboard, but it's an amazing multitasking keyboard for work, school, and games. No complaints, would very highly recommend.