The linksys wireless router isn't a bad product. However, the only issue I had was getting a solid connection to the router over the wireless portion. Sometimes, I would only get a medoicre connection about 50 feet away. I ditched my wireless router and got a Cisco Wireless Aironet 340. That works wonders and it was only a little more expensive on ebay!
I have a friend who has this linksys router but has Lucent Ornicco adapters to connect to it and it works great. He gets a good solid connection without any problems in his two story house. I have another friend who has this router and the linksys cards to go with it and he gets a ok connection, but has some range limits (about 250 feet I believe).
I think your mileage may vary since I have heard so many differing accounts. 🙂