Wheel Spacers And Mudflaps

[Kwp0906]

I know mudflaps have been covered in some depth elsewhere on the forum but I cant find any specific reference to any thay have been fitted with wheel spacers. I have 25mm on the front and 30mm spacers on the back and just wondered if anyone has any experience or recommendations for the best ones to fit and whether or not they are still effective? In my opinion the genuine vw ones look rubbish set back down the bumper so ideally looking for some aftermarket examples.