Ive talked to a bunch of people and read their logs on SARM's S4, so heres some info Ive learned over the past 2 months on it.....
IF YOU GET LEGIT S4:
It is extremely weak, might see 5-8lbs gain so NO its no where near comparable to Test, Test will win hands down every time. It keeps you decently lean while on, nothing that cant be obtained with a strict diet. PCT IS REQUIRED, it will shut you down! There are vision problems with this substance, as you increase the dose the vision problems get worse. You have to dose high to see any results, most start at 50mg/day and ramp up to 100mg/day...
Over all for the price of LEGIT OSTARINE S4 (NOT ANDARINE) you could get a full 12 week cycle of Test which will give you 2-3x the results with much much less sides...
Hope this bit of info helps