[tintin]

Diamond cut is only worth the extra expense if the car doesn't get heavy use (e.g. as a daily driver), as the surface finish is almost impossible to protect fully, no matter what the provider says or what finish they/you use to protect it.

PS: even if you DC, it won't give you a "true" OEM finish, as the inside face of the 20" OEM wheels are finished differently, and completely impossible to replicate.