I got the
Belkin N1 Vision when I switched to ADSL a couple of months ago.
Strangely I lost 0.5 meg sync but it seems far more stable than the O2 supplied router as that needed rebooted 2 or 3 times a day, with the Belkin it only needs a reboot when I've been messing about with the settings.
The Gigabit Ethernet is brilliant for the home network, streaming to PS3 etc. Can't really comment on WiFi N as I only have G compatible devices.