Motronic ME17.5

Hello all , I`m starting into another project and this time I am looking to use the factory ecu and do some reflash work and tuning . I`m still going through the courses right now , so maybe this has been addressed , But what is the preferred software for working with the Bosch Motronic family ?

I believe the main options are Cobb AP, WinOLS, and Eurodyne. Cobb has good maps and descriptions but they don't have a DIY tuning option; it's only licensed to shops. WinOLS from what I can tell has better (easier to understand) map descriptions than Eurodyne.