More online reviews

Macintouch "Optimally configured, AirPort Extreme 802.11n provides amazing wireless speed, if you have 802.11n client hardware (available in most of Apple's recent Macs). For best performance, we recommend running the wireless network in 5GHz, n-only mode, and keeping older 802.11b/g clients on a separate wireless nework (perhaps using an AirPort Express, currently $88 at Amazon, connected to the AirPort 802.11n base station's LAN port). Overall, we feel the AirPort Extreme 802.11n base station is an excellent choice for new networks. Poor NAT speed limits the network topology, and performance is limited when supporting previous "b" and "g" standards, but the new Apple base station provides best in class wireless performance with easy configuration and valuable features. "

Ars Technica "In the past, it was hard to justify the expense of an AirPort router when it didn't come with more than a single LAN port and had few features you couldn't get in a $20 wireless router. Now that Apple has included the extra ports, the Bonjour features of the Express models, and the unique (to Apple's line) feature of seamless network-attached storage, I'm happy with my purchase. That said, at $179 the AirPort Extreme is priced as much as $50 more than other draft-compliant 802.11n routers that offer similar functionality, and if you don't need AirPort Disk, you can get an 802.11n router for half the price."