Which wireless keyboards and mice are compatible? [closed]

Could I know, what wireless keyboard and mouse work fine with ubuntu for a desktop. Last time I installed it on my desktop, my mouse just got froze!! Then i stopped using it.

I really wanna use ubuntu, and i'm planning to buy this wireless devices. Any help in finding the working wireless keyboard and mouse combo, would be appreciated.

Also I heard most of the Logitech devices freeze on ubuntu!!

I'm using a MS Natural Ergonomic Wireless KB & Mouse.

The mouse works but the keyboard drops connection every half hour. This can be resolved by pressing the connect button so it's a trade-off between that inconvenience and the fact that I find this the most comfortable keyboard I've used (an old wrist injury makes typing on a standard keyboard a bit uncomfortable at times).

(Ubuntu 12.04)

I am using the Microsoft Wireless Keyboard 6000 v3.0 and the Microsoft Wireless Laser Mouse 6000 v2.0. These work flawlessly with Ubuntu, I would give them a very high recommendation.