I'd be interested in trying one of these out (and not for the lighting system) but I like my peripherals to match and everyone I know with a Razer mouse seems to need to get a new one within a year. I still have a 10 year old MS Intellimouse so spanking £60 a year on a mouse just seems madness to me.
I'd like to try one as I've been happy with the Razer peripherals I've had in the past (Diamondback Magma edition lasted a good few years, as did the Imperator but both had the same flaw - eventual poor switch response owing to a groove being worn in to the bottom of the left button with use) but I'd want to try one out to see what the switches feel like. I still have a Belkin Nostromo which was great at the time but I've been using a mech keyboard for a years now so it feels horrible. The chroma system is a nice touch though as I definitely find red easier to handle by way of illumination.