Nothing. Those other drugs have better abilities at lower bf%'s. So you look harder, more vascular, more pump, more grainy, etc.. Test and Tren (if you're willing to take it) is all you need. Tren isn't shedding fat off of me, but if I hold back my calories a day or two I can see it in the mirror. Tren has really good nutrient partitioning effects, makes feed more efficient.
350-500mg of Test is all you need, I would consider some Prov or even Winny (20mg ED) for SHBG control so it increases free T. Good synergy..
What kind of diet are you looking at? I think something like the Ultimate Diet 2.0 is very good for losing BF on a cycle. I plan to keep bulking on my cycle, but I'm taking the next 10 days to do the Peanut Butter Diet.. It should help me knock off some water, a bit of fat, and make me feel less plump.. No way in hell the 30lbs I gained in the last 48 days is all muscle..I shouldn't lose anything I gained on 250mg of Test E3D and 100mg of Tren EOD..