I can't say I have any reasons to use a fuel injector cleaner, just in the past I would on occasion use it,(other vehicles) maybe a couple times a year, I can't say I noticed any difference, maybe I used it as preventative measure, well in my mind at least that was what I was thinking.

 

E10 gasoline has enough ethanol content to make a fuel system cleaner redundant, likely why a difference is not seen.
Major brands such as Mobil1, Castrol, Shell, ACDelco Dexos 1&2, Pennzoil, etc are more than sufficient.
The true synthetics like Amsoil and Redline are doubtfully worth the extra cost.