I get the MSD one that is available from Summit and Jegs as well as A'zone, Advance and Orielly.

I think the MSD is made better than the Ford Racing one. The MSD has brass contacts too. I believe the Ford Racing is aluminum.

I would not buy the cheapo stuff. I would rather have the Motorcraft parts. If you want Motorcraft, I bet Orielly can get it.

The Accel or Ford Racing stuff is good too.