Epoxy primer advice

[daredvl22]

Ok, I dropped my car off today to get sand/media blasted. I finally got the majority of the metal work done, so I figured it was time to get the car blasted and primed once and for all. When I was talking to the guy that was going to spray the car, he said they can use whatever I want (IE) epoxy, etching primer, etc. They use an industrial type epoxy primer. Not exactly sure what that means, but he assured me it was good, just not as expensive as automotive epoxy primer. He did say I could bring him whatever I wanted, but I had to supply it at my own cost. Should I purchase some DP 90, 40, or whatever (can't remember???).....or should I just trust whatever they use??? BTW there were about 5 cars sitting in his shop that were recently blasted, so I assume they know what they're doing. What are you thoughts???

I guess my question is, does it really matter what epoxy primer they use?

Thanks,