The Belkin F5D8231UK is easy to set up
can be left on 24/7 no overheat
designed for cable
handles 20 meg easily
looks attractive
does what it says on the tin I bought this for use with my virgin cable and belkin wi fi phone.
I thought it had QOS , alas it does not. But its still a great wireless router and would recommend it without hesitation

Wireless networking seems to be one of those very nebulous areas. To cover my garage and another building - both within 40m of my house - is not simple. If you ask experts, they come up with very expensive and complicated setups. Then you come across the N stuff which looks like it should do the job. It will only partly do the job if I site it in my daughter's bedroom on the top of her bookcase! But then it does work in a quarter of one of the buildings and works well in the second building. I admit it is not simple since we have all buildings on different levels and there's quite a lot of brick around. Siting in the lowest building in the middle of the site doesn't give me reliable connections in the house. More work to do. I'll try to keep you posted. (don't buy a big aerial - they don't seem to help - see my antenna review which I'm about to do...)