I'm in the market for a new router. I currently use a Linksys/Cisco RV082. It's 5 years old, works fairly well, but I need wireless and WPA2. I've thought about getting a Cisco C871W or C1811W, but I'd have to learn a bit of IOS, plus the routers are all close to $1k so the Airport looks like a nice product. Does the Airport extreme have good range? I have a 3 story 5,000 sq/ft house, the airport would be in the basement, would it cover all the rooms? If not, is there a way to mount an external antenna to it? Does the airport have SPI? Any feedback or suggestions would be greatly appreciated.