I was a Brad Penn guy for most stuff, also because I used to love Kendall Green (which despite Brad Penn's words, looked NOTHING like their green oil), but word is they recently changed a little. Now called PennGrade, still seems good, but many have been seeing a little bit of a pressure drop, reportedly due to some thinning agent. I still have a couple cases to burn through, but I think I'd call my consistent favorite Valvoline VR1 for flat tappet engines
For roller engines, I agree, Mobil 1, or any of the modern synthetics are hard to beat for cost and performance.