I'm a new iMac owner. I'd like to gradually add to my system and make it all Apple. First item I'd like to get is a an Apple Router. We have 2 iPads and 2 iPhones in our home and mostly do e-mail and web surfing. I Like the look of the Airport Express vs. the Airport Extreme. My question is will the Airport Express be best suited for my needs or should I be a bit more agressive and buy the Airport Extreme? Of course cost is a factor but I'd like to make the most sensible purchase that I can. Any and All suggestions are appreciated.