bookreader
Thanks, I've done A LOT of research on the topic and this seems to be the best router with official OpenWRT support.
Another good unit is GL.Inet Flint 2 (I like its form factor more) but it doesn't have official openwrt support (only snapshots) and I am doubt it will ever will, as its predecessor, Flint 1, never did. I don't trust their stock openwrt-based firmware so don't consider this unit.
Whilst pfsense is good, it doesn't support wifi which is a dealbraker for me. I don't consider openwrt on Raspberry Pi either, for the same reason (lack of wifi and multiple 1gb ports).
I have the same situation as yours - upgraded to 500mbs fiber from crappy 60mbs vdsl, and will certainly get this unit. Too bad they don't have it in stock here in the UK, need to import from Amazon US.