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nothing is comparable to tren so im not going to even attempt to address that....
in terms of compounds like primo and mast, you have s4, s23, yk11 and rad140 in the sarms world... AMAZING compounds that carry MANY strong and comparable characteristics to many different steroids... i have done full videos on all these that you should watch because i cant sit here and write dissertations on them all, however i can tell you that s23 is stronger than some steroids on its own... yk11 is very comparable as well... i love s4, always have and it has many masteron characteristics but rad140, at this time, is the most popular sarm available aside from possibly gw501516 so these are all tremendous options
