i had loads of issue withe bt broadband router, and then bought a belkin also had loads of problems with that so i then bought a netgear router dgn2000 and have never had a problem with it. it is switched on 24hrs a day everything connects to it and it just works unlike all the others i have had.
i have a ps3, wii, 2 pcs, 2 nitendo ds and a kodak printer and i dont have any issues with anything where as all the other devices i have had gave me connectivity problems all the time.
maybe you were just unlucky and got some sub standard ones.