I like the shape of the 502, but I don't find it hard to get used to new mice so I don't mind the shape of the g900 either. The logitech gaming software is the best peripheral software I've used. Leagues ahead of Razer's garbage synapse.
They do, yeah. But it's extremely expensive, has romer g switches (ew), no backlighting, and the huge palm rest is non-removable. So while I like the idea, poor execution imo.