Yeah I read the reviews before purchasing.
Having taking the punt though and from acutally having them in place I'd have to say otherwise.
My main workstation is wired straight from my router, the rest are now fed from these. At best they're getting just shy of 500mbps at worst around 300mbps. The previous RBK50 Netgear Orbi mesh I had in place was good, but not this good.
Granted the technology can be affected by a lot of factors though so not everyone is gonna a fan.
I am not doubting that when they work there is nothing as good but page after page of people complaining about them losing connection all the time sort of puts me off spending £300 on them. Several people dont even have any of the original set left as they have been replaced under warranty. The longevity is the issue for me.