Ive Done 2 cycles of SUS500 and had very good gains both times. Strength increased drastically and had good solid gains in mass, admittedly a little wet. I'm currently using spawn at 3 caps/day for a cutting cycle and strength gains are very noticeable. More muscle hardness and vasularity as well with the Spawn on a cut. I'm 2 weeks into what will end up being an 8 week cycle. I will say the SUS500 will shut you down hard by about 3 weeks into the cycle. No libido at all and balls will shrink to an astonishingly small size. Everything came back to normal about 3 weeks post cycle though.