I use the Aircraft Simple Green, I never use any other kind, have not found a need for any other kind anyway.
I think FAR too many people get ideas that Simple Green is a benign substance because of the name they chose for it, overall IMHO it is pretty caustic. One other IMPORTANT point I will make is that the jugs it comes in can become so brittle that they shatter when you pick up the jug. I had that happen with one on a shelf up above my head, the jug totally came apart and the contents went all over me and the utility room, I am SO glad I did not get a faceful including my eyes.