my recent experience.
I just did my first T3 cycle, finished almost 6 weeks ago. I started at 232 lbs. (6ft tall) and around 10-11% bodyfat. I ran it like this:
16 week overall cycle:
Week 1-6
Test Cyp. 500mg/week
EQ. 400mg/week
Var 40mg/day
Week 7-12
Same anabolics as above
T3, started at 12.5mcg's and moved up to 50 mcg's for 3 weeks than tapered back down to 6.5mcg's. I also did 2 weeks of clen at varying dosages while on T3.
Wish I had time to write more, but I felt it ate more muscle than fat. My weight has dropped down to 225, and I'm leaner, but feel even at those low dosages of T3 I was eating away muscle. I say this because after I came off I still had 4 weeks in my overall juice cycle and my best "body transformation" happened 2 weeks after ending T3, but I'm still only at 8-9% bodyfat. I've done everything: GH, slin, every anabolic out there and I won't do T3 again. I could of gotten better results just from increasing cardio, stricter diet-without all the risk of thyroid problems. But I didn't have any "rebound" either, or none that was very noticeable, that might be in part because I tapered slowly and down to 6.25mcg's, than immediately started natural thyroid stimulating supplements. I think if you're an endomorph it might work better. I'm more of an ectomorph for most of my life and muscle is real hard for me to put on and I have to do everything right.