I've been running a Linksys Wireless-N Ultra RangePlus 2.4Gb or 5.0Gb router for about the past three months and must say that I'm very pleased with how well it has worked so far. It even came with a very simple setup cd, where all I had to do was run the CD, connect the router to the modem & computer for initial operations (may later be ran wirelessly to communicate with the router), and then run LELA (Linksys EasyLink Advisor) to add any security encriptions along with setting up the wireless connections. Overall, I thought it was simple to set up and the quality of the connection throughout the house is superb.
It cost around $110-$120, but it's been very useful so far.