From my experience, and I've installed about 8 different wireless routers, the Linksys are not that great. For my own use at home I tried a LinkSys a few years ago and had quite a few problems. I then tried DLink, they were very poor also. I then switched to Netgear routers with the built-in stateful packet inspection (SPI) firewall. They're not the easiest to setup, but they are the most consistent and reliable I have used, and I feel more secure. You can also setup the router to email you when it senses suspicious activity going on or someone trying to spoof IPs.
Having said all that, however, if I was buying a new firewall today, I would recommend buying the newer models with 802.11n support. These are much faster, which is insignificant to most people since their Internet bandwidith is limited to about 1 megabit anyway, but the key is their range. With 802.11b/g routers, I have a hard time with signal strength in various parts of the house. But the new 802.11n routers have eliminated that, and they are also compatible with 802.11b/g network cards, so if your laptop is already equipped you can still use the older technology.