Looking for a wireless mouse & keyboard...Suggestions?

So as the titles says I'm looking for a wireless mouse & keyboard... I'm really tired of cables and I would like to start getting rid of them by replacing my current mouse and keyboard for a wireless one. So any suggestions... Things I want if possible are:

• A high quality mouse that is at least equal than my G400.
• Good battery life.
• Being able to use the same receiver for both peripherals so I can use only one usb port.

Thanks.

Logitech Wireless Desktop Set MK220

If you want a gaming wireless mouse go with the G700s or the Razer Mamba

This, but be aware that your mouse will have lag for gaming, so if you play competitive fast paced games you will be at a disadvantage.

Yes it is recommended not to use wireless gaming mouse even if it says 1ms and all that, for competitive multiplayer games.

I haven't used very expensive 'gaming' wireless mice, but every wireless mouse i have used has felt really laggy to me.