Brake discs - cheap RockAuto?

I'm looking at options for new brake discs. Not looking for anything fancy, just plain discs similar to OEM.

RockAuto - £18 - £27, CTEK, Bendix, Dynamic Friction
Amayama, presumably OEM, £145 rear, £156 front.

Are the RockAuto ones a false economy?

Peter

EBC are usually a good bet.

EBC are my go to for brake parts for all cars

EBC it is then. Thanks for the replies.