Thou, it's actually worth trying if you can ever find the real deal. So many random caths are passed off as meph that it's near impossible now. I would strongly advise not wasting your time with 4-MEC - it is crap. If you can find 4-EMC from a reliable source, that is a much better substitute. That being said, combining M1 and meph (or even 4-EMC) is so much better than the sum of it's parts. The comparisons to MDMA are there in some ways, but far more hedonistic.