I had the same dilemma in choosing which lenses to adapt, so I tested the MC-11 and Metabones V, both with the latest firmware, at a store recently with the following lenses:
Canon 50mm f/1.2L, Canon 70-200mm f/2.8L IS II, Canon 85mm f/1.2L, Sigma ART 50mm f/1.4, Sigma ART 85mm f/1.4
I also tested Sony's native 55mm f/1.8 and 85mm f/1.8, for comparison versus the adapted glass.
The Metabones V performed better on all lenses except for the 70-200mm f/2.8 IS II, where the MC-11 was more consistent in locking on to focus. The Sigma 85mm ART was definitely faster to focus on my A7II with the Metabones than the MC-11, not by much, but it was faster and confirmed by the store rep too (who presently only sells the MC-11). Perhaps you may have different results with a different camera model, but for me the Metabones V was an easy choice to make.
After my test, I purchased a used Canon 200mm f/2.8L II to try out and it works extremely well on the Metabones V and also does Eye-AF okay too.
