I did an entire 42 day cycle of Stak and Test, at the same time taking Pak, Nitro, Pump, Omega & Flex and I was taking Universal Nutrition Torrent Zero. It was phenomenal. My muscle mass went up, my strength went up, had no aggression problems whatsoever, though I've noticed I'm hairier than I used to be (all over).
I followed this with a one week break from Stak & Test, followed by a stack of M-Stak, Pak, Nitro, Pump & Omega (gave up on Flex as I wasn't really feeling it helping, and I do have some issues with one Achilles tendon, but maybe it was doing wonders but I wasn't feeling it on account of the demineralization caused by the increased testosterone levels) and switched to Gold Standard Whey (it just works better for me).
The M-Stak cycle was, again, grand... 84 days ago I weighed 123 kg and I now weigh 122 kg, I've lost almost 3% body fat, gained muscle, and it feels fantastic.
I know the sups don't work the same for everyone (i.e. Cuts and thermogenics don't work at all for me, my metabolic rate actually drops, and I can't for the life of me do any sort of cutting), but the gains I had were phenomenal and I'm probably going to go for another cycle like this.
Thanks for all the help, everyone.