Ok, So BT's FTTC products are apparently in my area, and I am thinking of upgrading.
Currently I use a Draytek Vigor 2820n, and am Happy with it. However as I use the ethernet WAN port for a second internet connection I cannot upgrade the ADSL connection without getting a replacement router.
IPv6 support was only a nice to have when I last upgraded, but not essential, so the Draytek was chosen despite not supporting it. This time IPv6 (and specifically 6to6 NAT to allow easy multi-homing without having to try and get domestic ISPs to support BGP) is an absolute must.
Load balancing across two internet connections is a must.
What would the good people of TBB advise? My budget is not unlimited, but for a decent router I am willing to pay.