BT White Wholehome, as much as it had its issues did allow you to manually select WIFI channel, which was good because the 2.4Ghz auto setting seemed to check was was most congested.....then choose that killing my baby monitor.
I didnt realise that those DECO's didnt allow you to change WIFI channel, thats a bit wild....
Thank you naylor2006 and rbz5416 , I'm getting very close to biting the bullet on the NETGEAR Orbi 770 three pack.
Seems to have everything I might need for the next couple of years.
The 990 series....ouch
PS I will get back to the forum with results. 🙂