I installed this as a free replacement for my old BTHub-3, which has given very good service for several years.
Beware. I use an office VOIP phone at home and this started receiving spurious calls on a regular basis. This is apparently because SIP is not disabled. It seems that it is impossible to disable SIP on this router (I believe it may be possible on the business version but on mine the menu option in the Advanced Firewall settings just isn't there).
The other problem was that our Canon MF4700 printer simply stopped working as the router was doing something aggressive to it over the WiFi. Attempts to register it to the router failed.
Wi-fi range to a distant part of the house became a problem - it wasn't with the old router.
So I've changed back to the old router and everything is fine. Download speed is 51Mb/s, which is entirely sufficient.
Some devices have a problem with the Homehub dual band having the same SSid (name). Try giving the 2.4Ghz and 5Ghz frequencies different SSids. Just add a 5 to the end of the 5Ghz SSid so you know which is which. Check the 5 GHz Sync with 2.4 GHz: is set to NO.
Once you have done that "forget" the connection on your devices/printer and then restart the device/printer and log onto both the SSids if the device can use both frequencies. Not all devices can use 5GHz.