Bit like asking for a good car recommendation:-) Depends on many variables, as a starter see this I have posted in the past (and earlier today !)
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I have never used wifi on a VM Hub ! Assuming your wired connections are all ok, then getting your own wireless equipment will solve any wifi issues permanently, and will be transferable to other BB suppliers kit should you move supplier.
Dont bother with extenders or boosters - get either.....
(1) A Mesh System, (2) A Wireless router, (3) A Wireless access point or (4) A combination of (2) & (3).
I would say a good Mesh will be the best/simplest/most flexible for most average users. A Triband system is better for the "backhaul" and for users on high speed packages and umpteen simultaneous connections.
It depends on your requirements for... better routing features, your house layout, size, construction materials, your tech abilities, and of course, budget, ~£60-80 will get a decent introductory wireless router but 'may' not alone solve the wifi in your house, but spending up to ~£500 will get the “Rolls Royce” solution of a high-end Wifi6 Router & WAP's or a top end Tri-band Mesh system. You'll probably want something suitable - somewhere within that range - I reckon ~£100-150 is around the “sweet spot” for most standard users, and where you would probably need to start for a standard 2/3-story house if it has brick walls. Less for a one-bedroom modern build flat, more for a mansion
Good options for Access points are from Ubiquiti, (routers also) and also, from these companies - for their WiFi routers or Mesh systems: Asus, TP-Link Deco's M4/M5, Linksys Velop's, Tenda Nova's, Netgear Orbi's (and others) – I would stick with these companies whose business this is - rather than Johnnie-come-latleys like Google, Amazon, etc. Also be sure the router or Mesh specifically say that they have 1GB ethernet ports - some of the cheaper ones only have 100Mbps ports.
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.