Hello @MikeFromOz,
Indeed, I went to Orange with the Max 2 Gbps/800 Mbps offer, which is extremely stable, in my area anyway.
I use the 2.5 Gbps port of the Livebox 6 with pfSense to benefit from the 2 Gbps, even if I have a ready installation with an ONU SFP GPON 2.5 Gbps module because I sometimes had problems with the link re-establishing during a physical disconnection test. I totally agree that Free's hardware is very good and much more "flexible".