Can't tell you what is best/worst all I can say is I have a netgear wireless router. That as yet hasn't caused any problems. One of the reasons I chose it at the time was because it has 4 ports as well as wireless (primary for connecting ps2/xbox and things to it) although these days you can get wireless for them, but they do cost more.
Get the fastest and one with a good range available. Be it netgear or linksys etc. probably a good idea to have a browse of some tech forums and such like, like toms hardware and try and find some comparisons.