"Blowing the Lid Off"
Then go out and buy the cheapest lid you want with confidence it'll be just as safe as the most expensive lid you can find.
Just make sure it fits properly and if it has all the features you want. Maybe that's an Arai for £600, or maybe it's a Lidl "B-Square" for €30, or something in-between (Shark, AGV, Suomy etc).
I just bought a NUVO "Brigade" in carbon/black, + a spare smoked visor - ECE22-05, gold sticker, double D-ring strap, fully removable liner, really good paint, lots of vents - for all of
£100.