Router - Vigor 120
(Not really a router as the title suggests, but it fits roughly into this category)
The Vigor 120 is a modem able to bridge on to Ethernet.
Here are some notes on the device:
IPV6 problems on Firmware 18.104.22.168
If you're looking for a firewall/router platform, the Vigor 120 works well with pfSense on both 20CN and 21CN BT ADSL lines. pfSense does not yet have IPv6 support in the current release version (2.0.1 as of 16 May 2012). The development snapshots for 2.1 do support IPv6. You might also want to look at MonoWall, a sister project of pfSense. Both projects are built on FreeBSD Unix and setup and management is done in your web browser.