The thing is, the reason you had all these resources pop up (pathoma, BnB, sketchy) for step 1 was that it used to be an arms race to get the highest score. Now that it’s P/F it’s hard to tell what works and compare methods. You also have idiots who barely passed the exam telling people not to do pathoma and sketchy.
So I can’t really answer your question. I liked Bootcamp. The reason I used BnB instead is that there weren’t really dedicated AnKing cards for Bootcamp last time I checked, but that was a couple years ago. They may have changed that now.
For a P/F exam, and getting a good foundation, I don’t think it matters. Just make sure you do AnKing with whatever videos you watch and you’ll be fine