I'm still using the Razer Starcraft 2 keyboard and mouse I won here on MyGaming (thanks again guys). When I received it, I commented that the keyboard is nice and sturdy while the mouse felt a bit light and and maybe even flimsy. I have to say now that I am so used to the lighter mouse, I wouldn't want a heavier model when gaming. And even though it is much more angular than the Steelseries mouse I have at work, it fits better in my hand with less fatigue.
As far as the keyboard goes, I still can't find a single fault with feel and I do a lot of writing on it from home, not just gaming. I just miss the dedicated arrow keys. And it takes up 2 USB ports that used to be bit of an issue on my previous PC.