I see you like the Imperator on facebook. Do you use it or the Adder?
I'm rolling with a Death Adder and a G15 right now. The G15 is already squeaking with certain keys, which I've never actually had happen with any other keyboard. I can just tell that the keyboard is dying soon, and I've only had it about a year.
The Death Adder is still doing well, but the feet need to be replaced or something, because they just get sticky as hell no matter how much I clean them and my Exact Mat. It's also about a year old.
I will probably also get one of those larger mouse pads that look pretty cool.
I was never that impressed with the G15 because I never use the LCD stuff on the keyboard. It was just more processes running in the background and they would crash as often as not, so I just turned it all off rendering my special keyboard useless.
I think I will go with the Lycosa keyboard, and stick with the Death Adder until I find the "right" mouse.