Canon AF 1.8. I've shot tons of stuff with all these and there's only one that's just "good". The rest are astoundingly good, regardless of brand or hype. The one "only good" lens was the old, manual focus Nikon 85 f2. And people snapped them up in the past because, wide open, they took the hard edge off portraits of women.
I'd feel comfortable using any of them. I also chuckle when I read the DXO tests or the other definitive tests and I see that they've cautioned people about the mediocre performance wide open. Maybe in the supercomputer but not on the prints.
People have just kinda gone nuts in the digital age. It's sharpness at any cost, for any use. Well that's okay. All the lenses above will do wide open sharpness just fine. But then we always have to go back and smooth out the skin tone. One step forward..........
Program Note: Just a reminder that I'm doing a book signing at Precision Camera in Austin, Texas this Saturday from noon to 2 pm. Well be talking photography, maybe looking at prints, definitely drinking hot beverages and so forth. I hope to see you there if you live in the area.