Brad Penn
I could post all the engineering and test data that Brad Penn publishes concerning their oil(s), and we could discuss which oil is best, which oil is marginal, and all the reasons why.
The best advise I can give you is to ask your fellow racers that use Brad Penn why they switched. I will tell you that every engine I assemble with flat tappets, gets Brad Penn oil and ZDDPlus oil additive.
Ask around, then you make your choice. Let us know the results.