Uh, it's not about "best" oil or brand. Sure, every brand has some unique product that excells in more of a specialized way....but it all depends. Look at oils like MaxLife Synth, German Syntec, Mobil 1 Turbo Diesel, Rotella, Pennzoil Platinum. They are all good in their own way and frankly, when it comes to plain dino 5w30, all brands perform equally well, give or take slight variances in application, climate, duration, etc.
The forum lessons are more about correct APPLICATION of the various oils available and how to do it in a cost/effective manner. You won't find many guys here dumping Mobil 1 every 3000 miles because it's "best", it's about getting your money's worth out of any oil- in the right application.
If you have a brand you like, use it with confidence. If you have a specialized vehicle or application, like you live at the North Pole, you drive a Euro car or HD yes, a specfic oil might suit you, but you have to state what the starting conditions are. It might be all of the above, a TDI in Northern Territories or none of the above, a BruceBlend 0w-10 Lite in a Texas Jeep.
At some point you have to decide for YOURSELF...and if you say "Royal Purple", we have a problem.