I purchased one of these to replace my Naga when it broke. I prefer the G600 for two reasons. Each button row is angled differently and the central button has a small notch, so it's much easier to "feel" your way around. Second, Logitech software is just better IMO. Easier and faster to use and it's the same software that you use to configure your G15 (which every boxer should own), so you have less junk wasting memory.