I'm going out on a limb here and i may be in error, but i'm thinking that the metalized engine turned materials are coming out of the same place. the guys name is Joe Coburn. a few years ago he sold the process to RTape and they had been making it, and making it well for a few years. Apparently sales dropped off to the point that RTape hung it up and sold the process back to Joe. He has been making it since and if you ask me, not as well as RTape. We have bought directly from him for dirt cheap but he's really hard to deal with and seems to be on his own schedule, so we have since gotten it from other sources. it's always the same material, from about 4 different suppliers so we know that's where they get it in the first place. This goes for small and large engine turn silver and gold.
Recently we had a batch of gold that was mottled in light golds to heavy yellows. We sent it back. It has something to do with the inconsistent coating of the gold tint. knowing this and not seeing any material out there as of yet that differs from Joe Coburns, I'm thinking that you're going to get the same stuff regardless, unless you find a roll that's left over stock from when Rtape was making it.