I'm winding down a very long, successful Superdrol pulse (4 months, 20+ lbs -- don't judge), and I'm gonna try to get by with Ergo's 6oxoExtreme as my PCT. It has both an AI (6oxo) and a SERM (resveratrol). If I need to use a more traditional "research" SERM, I will. But I frankly don't think I'm very shutdown, because of my odd method of pulsing (3 consecutive days on, followed by 4 consecutive days off; with some low-dose, 2on/5off weeks in the middle). My nuts haven't shrunk, and I'm actually hornier than normal (I'm 46). I attribute this to the constant HPTA "bounceback" on my 4 off days every week. I'm also hoping this will minimize my risk for delayed gyno. We'll see...
[PS: I've been very careful with my support supps, and I'm kicking ass on cardio, but I'm still afraid to see my liver/lipid levels. I'm not dead, so that's a plus.]