I just bought an Asus N66U, very impressed.
Really good wifi signal strength, mine is currently only on 60mw power (out of 100mw for EU) and its the strongest signal I've had with any kit. (opposite corner of the house downstairs from the router)
Web interface is ok, lots of options but if you're into your Linux (I'm a Linux software dev) you can telnet to the box and you've got root access.
I've been using that to write my own scripts to monitor kit and custom ipv6 firewall rules.
The feature where you can plug in a USB drive and schedule downloads (http, FTP, BitTorrent, usenet) overnight when you might get a better bandwidth cap or lower contention has been quite useful.
I bought it thinking I was going to stick ddwrt or tomato on it but really it's quite configurable as is.
You can demo the GUI on Asus' website here:
I'm currently using it on virgin media 50mb, but it's also been on a 1gb link when I wanted to test the throughput, I got just over 850mbps routing from wan to lan. (I suspect it was the server that bottlenecked it a bit)
In a few days time it is going to its final home on an AAISP FTTC connection. (customers of theirs will appriciate why I like the Asus can do my downloads between 2am and 6am for me!)
Edited by drws (Thu 21-Jun-12 21:35:58)