Wireless Keyboard & Mouse Suggestion

I want to but a Wireless Keyboard & Mouse. I will mostly use it for regularly typing and web browsing with occasional gaming.
I have short listed few models below, kindly suggest which one of these will be a good choice or any other model. Thanks.

Microsoft Wireless Desktop 3000: Amazon.co.uk: Computers & Accessories
Logitech MK260 Wireless Desktop: Amazon.co.uk: Computers & Accessories
Amazon.co.uk: Buying Choices: Logitech Wireless Combo MK520
Logitech MK320 Wireless Desktop: Amazon.co.uk: Computers & Accessories
Logitech Cordless Desktop S520: Amazon.co.uk: Computers & Accessories