My EGR has failed and I've been quoted £800 to have it replaced

Looking to do the job myself - doesn't look any more challenging than changing the turbo was. But trying to work out what BRAND to buy.

VW dealership quote me £360 for the part not including the gaskets.
Or I've been quoted £320 by ECP for a Pierberg, or via CarParts4Less at £220
I can also obtain a Wahler locally for £320, or via ******* for £246

I believe that both Pierberg and Wahler are of OE quality - can anyone confirm?

The Carparts4less one offers next day delivery for £3.99 so I'm strongly considering going for that. Can anyone advise?