I meant to order the Planet Bike Cascadia fenders but I seemed to have accidently ordered, and received, the Hardcore fenders. Is it worth returning to buy the cascadia fenders or is there little to no difference?

(I'm not in any rush for fenders, personally. I don't mind riding in the rain it's more for less spray on fellow commuters and keeping muddy grit off my bike)

Get the Cascadias, as the mudflap really saves you........ a small difference, but worthwhile.

The Planet Bike website page, fenders, has a link to the right called "Fender Comparison Sheet" that links to a PDF that compares the fenders. Read it and decide for yourself.

Ah I feel a fool. Well that settles it for me, thanks guys!