At the moment, among conventionals, I have QS, Valvoline, GTX, Peak (FAR!), Proline (for the mowers) and Havoline DS in the stash.
They'll all get used for about 4K+ miles each (too short, I know) and they'll all do just fine in any engine I have.
In short, almost anything you might buy that meets API SL or SM will be perfectly satifactory for 95% of the cars on the road.
There are tons of UOAs here that bear this out.
The UOA forum is an interesting read. Remember, too, that some highly respected members here feel that UOAs tell you more about how an oil holds up in an application than whether it reduces wear.
Still, you were asking about which oil was best.