SHORT ANSWER: Just get the level of ZDDP necessary in whatever brand you like and adjust the viscosity to your climate.
I use VR-1 because I got a sweet deal and I happen to like Valvoline like a lot of my serious racer buddies.
VR-1 is racing oil so you have to be militant on the oil change intervals. Valvoline Nitro 70 was also a favorite with the local bikers(Harleys & Indians) back in the day. Nitro 70 would also keep my old 57 Chevy from smoking out of the road draft tube which was very important when trunk sneaking people into the drive-in(outdoor) back in the day.
To make it simple, it is not the oil or the brand but the additive package. Time to watch the oil brand loyalty posts boil over!!! Right now, I am feeling Joe Bob thru my psychic medium for some reason.
