2-FMA (2-FluoroMethAmphetamine) is pretty straighforward and clean feeling stim, feels balanced on both dopamine and adrenaline.
2-FA (2-FluoroAmphetamine) is pretty good too but not as clean feeling.
I have heard good things about
4-F-MPH (4-Fluoro-MethylPhenidate) but havent tried it yet.
Ethylphenidate (EPH) is euphoric and moreish but has strong vasoconstriction to it.
Isopropylphenidate (IPH) does not give you rush but good for keeping the attention on and general stimulation, mostly dopamine action.
MPA (Methiopropamine) could be fun and give you rush but it lasts a really long time and I suspect cardio-toxicity with it so beware, mostly adrenaline action.
EthylHexedrone (HexEn) is an ok stim, vaguely reminding of coke action, I usually mix it with IPH. But there is a long lasting mild vasoconstriction again with this one so be careful.
3-FPM (3-FluoroPhenMetrazine) was pretty interesting first few times, then I lost the interest to explore it more. It definitely has some serotonin action and it feels pretty nice, apart from pain in balls and really really long come downs (with weird brain zaps). Some people who IVd it, swear by the rush it gives, I can easily imagine it.
4-FA (4-FluoroAmphetamine) is an interesting chem, but I wouldnt use it as a stim - it has too much of serotonin action (at least for me). It is pretty good for going out though, it has MDMAish charachter
I havent tried
4-FMA (methylated version of 4-FA) and I would imagine it being less euphoric and more clear headed.
Was never into
PV (pyrovalerone) kind of stuff - for me the side effects always overweight the high with those but YMMV. I do not consider MMCs as stims as well.
As for the
Propylhexedrine, it may feel good first few times but IMO it's not worth the side effects you get from it, also extraction to HCl is a must IMO.
I hope that helps!