I did it many times (probably 10+ cycles) with great success.. I usually get great results with minimal sides. But i make it below the dosages i generally use it. For example my sweetspot is 400 on Deca. When i stack it with Boldenone, i use 200-300 max .. And keep it long.. For me, i really feel some kind of synergy between this two compounds. But there r always more risks involved when you combine more stuff.. And genetics plays a big role ..
For AIs, it depends the Test dosage you use. and again genetics...