There are no significant differences between most of the Entry level Cable/DSL Routers.
Conventional Wisdom claims: The Routing Trinity.
1. Netgear RT314
2. Barricade 7004ABR
3. Linksys BEFSR41
Some Routers have an additional Printer Server, and DialUp Modem input for backup.
I would choose the one that has the features that fit the way you use the
Internet (and may be it is on sale).
Table comparing these Routers (you don't have to be a member to read these reviews)
Comparing Cable/DSL Routers.
Link of Courtesy of: TallGeese