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I am a big fan of the Fritz! boxes they are great, you can pick up more used 7530's off eBay for cheap, upgrade the firmware and use them as MESH APs.
Ive done this loads of my friends and family and they've all been rock solid, really robest firmware, excellent features, excellent documentation and interface too.
Useful things like each one has a USB port, so you can add a printer to your network or attach storage.
They're not very well known in the UK, but they're widely used in europe and have a great reputation there.
eero mesh any good? TalkTalk are offering an eero pro 6 router free with their fiber 900 package for 25 quid a month for 6 months.
This is in comparison to zen at 70 quid per month for allegedly the same speeds who offer a "FRITZ!Box 7530 AX Wifi 6 Router"
I'd like a complete system anyway, so if eero is any good then perhaps it makes sense to start with their router. Though looking online it looks an 'old' one so maybe get whatever ISP and pick up the TP link ones everyone was on about a few weeks ago.