who says cordless mice are not good for gaming... those were old days when the data from the mice could not be processed fast enough and introduced delays. if u still say that is lags.. then DOOD u havent tried it...
i use logitech media remote s510(mouse LX5) key/mouse/remote combo.
look here *www.logitech.com/index.cfm/products/details/US/EN,CRID=2162,CONTENTID=10711
this mouse performs real good in games(even though the LX5 is preety low end for gaming, it is more of a show thing)... i have never felt a lag at any time...
if u r buying the G7 mouse then go for a G15 keyboard.
look here *www.logitech.com/index.cfm/products/productlist/IN/EN,crid=2287,categoryid=10
and buy a rumbelpad 2 wireless gamepad .. it is the most amazing gaming experience. enjoy the games as on a console.. every one knows that real gaming in not with key/mouse(except fps). once u have played doom/farcry/fear/quake u will need something different and then try prince of presia the two thrones, ice age 2, Marc Ecko's Getting Up - Contents Under Pressure, Manhunt,NFS-most wanted,(and all gamepad activated games) with the gamepad.. man u r gonna get HOOKED!!! just like me.
i bought it for 2000rs some time back...
see here *www.logitech.com/index.cfm/products/details/US/EN,CRID=2225,CONTENTID=9069
BTW the G7 and G15 are priced same.
Note: i think that u should consider that if u buy mice/keyboard as different product then their recievers will be different too. they will each use one USB port + one port for the gamepad(which is chump change for u when considering a RS5000+ mouse)