Hi, I have the Tenda N60 from eBuyer .. it's great .. currently lives upstairs under a bed .. no overheating issue , it bearly seems to get warm,
performance wise it's pretty much doubled my wireless speeds upstairs .. If I had the cash I would buy the ASUS-RT-N66U (but I do love my tech) and ironically I used to have a great Netgear WNDR3700/N600 which I sold after I hardwired the house assuming I would only need wireless for mobiles.
Unless you can splash the 100 quid for the Asus get the Tenda as has been stated some sites are selling this for almost 60.00 you could get the tenda try it for a few weeks if it's no good sell it on eBay got to be worth 20 quid all day long.