i have always felt that s4 is the strongest sarm and it often gets overlooked because the vision sides are always the main topic when in actuality, the results it provides are probably more drastic than any of its counter parts... you will see big increases in strength, vascularity and muscle hardening... it would be looked at as the winstrol of the sarms world... that is the closest thing I can compare s4 with... it is definitely something you want to incorporate... to get the purest and strongest s4, check out SARMS1.COM - The best Selective androgen receptor modulators...