Just scored a Logitech "Illuminated" keyboard. Came highly recommended and I swear by it. Keep in mind it's wired. I've used wireless keyboards for years, but decided to give it a go and I know what the hype is about now. It's a minimalist and well built keyboard that just feels right. Being able to use it in the dark is a bonus too. They do sell at Best Buy and Futureshop, but I got it $30 including free shipping from Dell.ca.
I would avoid wireless especially if you are a gamer. My friends constantly has dead batteries in the middle of games.