I love good coffee, i just love it. But I almost gave up recently, coz the spike and fall in energy levels is like the sugar spike and it didn't do me good. (in fact, I think I might be pre-diabetic) and it is totally true that it raises stress hormones. I feel so much calmer when I don't drink it, and surprisingly, I am more alert overall.
You should definitely ditch the Red Bull, it's a POISON and it's banned in some countries because it's linked to heart failure. Read here Red Bull - Wikipedia, the free encyclopedia