tune numbers

Getting ready to tune my q50 red sport but not sure whether To go with E85 or 93 octane . I know with E85 your gonna get better numbers and performance but I’m hearing a lot of people having trouble with the injectors failing both stock and aftermarket .... any thoughts or input on this ??

I’m looking to tune my car this up coming spring... I’ve been recommended a few softwares but EcuTek and uprev seem to be at this point the more common ones people go with. Which one is better or is there really no difference ?? Also would like to hear some whp and torque numbers if anyone could...