ITreviewed posted a review on the Linksys WRT610N Dual-N Wireless Router

The WRT610N worked reasonably well in our tests, though you can get better 802.11n performance if you're not bothered about dual-band. You should expect data throughput rates to top out at around 75- to 80Mbps in 5GHz, and ranges of 20- to 50Mbps in 2.4GHz. In a rough comparison, Apple's AirPort Extreme Base Station with Gigabit Ethernet generally hits over 100Mbps in the fastest 5GHz mode in testing, though speed obviously differs depending on location. Overall the WRT610N is easy to use and all of the important features you need from a router are present - except perhaps for a broadband modem and the facility to serve printers. You'll love the WRT610N if you're an early adopter who thrives on the latest kit, but consumers still getting their head around wireless networking don't need the additional complications of dual-band.

Linksys WRT610N Dual-N Wireless Router Review