How to choose the best WIFI router?

Ermmm

I wont this this would be a bad deal:
http://www.bestbuy.com/site/Cisco+Linksys+-+Factory-Refurbished+Ultra+RangePlus+Wireless-N+Broadband+Router+w/4-Port+Switch/9361246.p?id=1218091192542&skuId=9361246

Unless you dont like refurbished things. The price is very much fine and so its value too rather than the one you linked.