The first pro-hormone i ever ran has been 11-oxo. I chose it because of its advantages in cutting while maintaining some mass.
Libido took a nice kick and had a good drive going with it.
I can't say the aggression has really done anything dramatic, but i have noticed being slightly more easily aggitated.
Side effects seemed extremely low, no signs of libido drop, no dizziness, sleep problems, cramping or acne.
results wise it was awesome, didn't really help me strip actual fat mass, but did take care of the visceral fat mass and its definately noticable. at the same time as dropping 15lbs while on this cycle, i had increased the weights on nearly all my lifts. it was definately a great product and i ran it alone, so i can only imagine what to expect if i stacked it, and will be looking forward to my next cycle.