That netgear router that you link to is pretty good (I don't have it but I have a few friends that have it and they say it works great).
I personally have an old Linksys WRT54G which I love since it allows me to tinker with it since it runs Linux.
I don't think that it matters that much which kind you get if you're only gonna use it for casual 802.11b connectivity.
As a matter of fact most of the problems come when you have both g and b devices connecting at the same time; in which case the g devices tend to slow down considerably. Now there are some routers that do a better job and where the performance hit isn't as great. Bottom line if all your wireless devices are b then it won't really matter and any g router will work fine. It's more a question of cost/taste/features and I'm sure somebody will chime in and recommend some models.
