Thanks for that info nick! I was too lazy to do much more when I posted earlier. Yeah I will definitely pass on this one.
I didn't know much about propylamp so I did a 2 minute research session. Wikipedia says propylamphetamine is 1/4 as potent as amp, however it does not mention whether there is a difference in effects profile/duration etc.
Personally, I found ethylamphetamine inferior to amp and methamp. I also found ethcathinone extremely inferior to cath and methcathinone. 4-MEC was nothing like 4MMC to me, I found zero positive effects from 4-MEC besides barely staving off a 4-MMC craving. Some portion (possibly most) of Ethcathinone is eventually metabolized into cathinone but seems like ethcathinone also is active in its own right. Hence why it lasts longer, isn't as hard hitting, and has a slightly different profile effects-wise.
I would assume that increasing the chain with one more carbon past ethyl would just follow a similar pattern? But that's my armchair chemistry guessing, speculation from what I remember reading/studying.
Would you mind elaborating on the positives of Propylamp that you heard about? I'm a bit curious I have never come across it before or heard it brought up even. Thanks!