Best out of the box performance? -
Which is most quiet? -
Which runs coolest? -
The Aero is the tiny single fan one. If he has extra funds, I would for sure recommennd a dual fan 1050 ti.
The point is that 2 fans cool better than 1. It's not that hard to understand...
Where the general concept does work, however, is noise. With 2 fans spinning at the same time at lower RPM's, it will generate less noise than 1 spinning at higher RPM's. Normally I would agree that the Aero is the best choice, but he asked for the "best" 1050 ti, not the best value.