I just purchased the G15 a couple days ago and it is by far the best keyboard out there. As far as the mouse, I have the salamander red and I love it. I've also had both of the Logitech mice, but didn't like the way they feel. If you want to check them out, go to a Best Buy, they should have all of the mice as well as the keyboard on display. Razer also now has the Copperhead mouse which is a 2000 dpi mouse and still glows blue.
I have copperhead in green. Its not taht comfortable. the x518 felt amazing in my hand. i dont think the copperhead is worth the money. Who needs 2000 dpi anyway!? Its still a good mouse tho