To be dexos1, so far no conventional oil is good enough. Maybe its the reduced wear required. Some extra performance measure in dexos1 seems to disqualify every convention oil out there. dexos1 really does add a bunch of extra performance tests on top of the basic SN-GF5 swill.
Synthetic-blends in about every major brand are good enough, and of course full synthetics pass with flying colors.
One thing about this BITOG world, most people are not on this forum to talk about "minimum" performance, we want the best possible. Therefore, plain conventional oil doesn't cut it.