It’s an amazing router for a price I do deal with lot of watchguards they are good and solid but for only £185 this has everything a small business need, works with BT based fibre and any type of ADSL connection,
It has ipv4 and good ipv6 support as well, latested firmware even supporting Hurricane electric type of tunnel.
It has all kind of VPN even openVPN is their.
Only downside I can think of it’s only has wireless N protocol. not the ac standard.