I am using G400. There's no problem with it, but I feel that a little bit of quality has decreased. I am not saying that its good enough. I use Razer Goliathus Control oversize since 2007. The older ones don't have stitches on the border, but the newer ones do. I also have CM Power RX as well. Both are good mousepags, but CM's base uses rubber and has pretty good grip over wood/glass surface.
With G400 and Goliathus control edition, for some weird reason, the mouse feet gets scratched. It didn't happen on my older MX518 which I used since 2007 but died few months back. What I liked more about MX518 is that the screws were accessible without removing the feet, so that I can clean the insides. G400's scroll wheel seem to be getting stiff after a certain point of use.
There's a new lineup from Logitech with the 'S' in the end. But I am using Logitech's mouse since MX510, G400 is dissapointing. Then again, for a 1.5k I guess its pretty 'okay'. The point is, if there's a better mouse within that budget, consider it. Avoid Razer, I've heard and seen a lot of people having issues after a year eventually, and the distributors here honour only 1 year warranty period whereas for the 2nd year you'll need to ping razer and ask what to do about it.
