Best Wireless Keyboard & Mouse

I am planning on getting the Nexus 10, and use it has my main system, with all the complications that come along with that.

My question at the moment is, what is the cheapest/best wireless (Bluetooth I assume) keyboard and mouse for me to use with the Nexus 10, or anything else?

Sideish note, doesn't all these new Android devices support Wifi Direct, are there any items out there (like keyboard and mouse) that support that?