The main reason I was using the mast last time was for the aggression in the gym and the better boners plus the AI aspect. My last cycle was half the test, 400mg of eq, no dbol and no halo, 400mg of mast and 400mg of tren e. I am cutting the tren e in half this time around. The last 6 weeks of previous cycle I upped the test to 1000mg/week and actually added dbol for 3 weeks. At that point is when I noticed some more serious changes in my physique in terms of losing body fat, yet retaining muscle mass. Vascularity was freaky. I also dropped the tren 4 weeks from end of cycle after using it for 6 weeks. This time I am going all out in losing bodyfat and retaining mass. Or so that is the plan. I have used halo/winny before at same time and dbol at the beginning of my cycle and had no issues.
However, I do agree that excellent gains can be made with less as Radar pointed out. I have found in my case, that I respond better to a higher dose of test than lower doses. Why, I am not sure, but that seems to be the case with me. As a case in point, my buddy responds very well to only 500mg of test and lower levels of eq/mast/winny. And with price and injection quantity, I would prefer lower levels of things, but for me, it doesn't seem to work that way.
I think,I am really leaning towards the mast. It is pricy, but is somewhat more potent than proviron. I used this my last cycle, letro/nolvadex/cabasar with 500ius hcg a week. I have no gyno at all which is surprising since when I started my cycle I had it. I have some left over issues with surgery the VA did years ago on my chest to treat gyno and they botched it and left some "loose" skin so to speak. It isn't bad and the more body fat I lose and more muscle mass I gain, the less noticeable it becomes.