Trouble maker! You opened a can of worms with this...most of the answers you get will be preference based on nothing but opinion. Good luck. The folks that make it won't give you straight answers, and the last study done (Spicer) is getting old.
FWIW...you probably are better off with the right additive. As best as I can determine, the Bosch injectors are designed for european spec fuel...not the US spec...which has less lubrication. Do your research and then feel your way through....best you're gonna do.
The biggest no-no is alcohol based fuel additives and so called emulsifiers.
If it helps, I used Stanadyne performance formula for years, but just started using Opti-lube summer +. Stanadyne was fine but a little light in the lubricity department. Not sure about Opti lube summer plus...hoping for a new study.