The old zyxel P660R i used for ADSL was great. could snmp it, syslog it, stayed up for as long as you want.
This new VMG1312 is a bit rubbish by comparison. The fact that AA run a bugs page for it kind of backs that up
And told me if I wanted a router that would handle their IPv6 I could buy another one, seeing as the ZyXel they sold me doesn't reliably do so. I was told it is a bug that they believe ZyXel will not be correcting.
Kindness isn't going to cure the world of all its awfulness but it's a good place to begin. Daisy Ridley.
My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 54999/14466Kbps @ 600m. BQMs - IPv4 & IPv6
All that will run AA IPv6 here from my vast collection of routers, is the Draytek Vigor 130 modem into the FRITZ!box 7930, which will even do the work of my WD MyCloud NAS and DECT base station, though no full dsl info. Did think about the same Billion as you Bob, but seems a pig to set up for IPv6, whereas the Fritzbox is plug and go.