I was using a Logitech g900 but recently bought a Razor Naga Pro. The g900 is small and light, the Naga pro is very much not so. I mostly went with it because it has hot swappable thumb panels, to go from 2, 6, or 12 buttons. I usually use the 6 button one. I really like this idea, but not so much their implementation. The newer versions have a better set up for the 6 button configuration, but I don't want to spent that kind of cash just for that, and I don't know if the thumb panel has the logic to allow it to work on my version if I bought just that, from Ebay or what not.