The Ubiquiti products are very good. I use the
Ubiquiti ER-X EdgeRouter X 5-Port Broadband Router which at under £50 for a full IPv4/IPv6 router, statefull firewall, gigabit capable Layer-2 switch etc., offers excellent value for money. I'm with BT, but Sky and BT have pretty much the same IPv6 setup i.e., 'link local' address on the WAN interface with IPv6 prefix delegation of a /56 prefix. I've been using the ERX with IPv4 and IPv6 for well over a year now and seen no real issues.
I don't use the GUI of the EdgeRouter, but from the brief glance I've given it, I'd say it's probably not as simple as some of the more consumer focused products from ZyXel, Netgear, TP-Link etc. That said, don't let that put you off as once it's up and running there's little need for it. Also the CLI is excellent and there's plenty of good support over on the
EdgeMAX Ubiquiti Networks Community, and by the seems of things, here on Kitz also.