I recently quit using EC stack. Was doing that for about 2yrs straight.
I have to say, i feel much better. No mood swings, aggressiveness, relative high bp, million thoughts at once, feel much more relaxed.
I remember the first time i took EC stack, it was rambo+superman in a pill. Overtime it lost its edge.
I would use it during cutting periods due to its appetite suppression and energy elevation, but that's a max of 12-16wks.
HTH