If you are changing router, may I suggest the following. I have the same router and use it to share my Virgin 20Mb broadband, with my own pc (connected by lan cable, two laptops (wireless connection) in an upstairs room, and a Nintendo Wii.
Have never dropped a connection with any machine, and all computers can stream music video, without a glitch.
Very cheap also. I paid double this price in local PC shop. :(