Might be the AY, it feels incredibly stimmy the come up does feel like AY in that you get all the twitchiness and potential for shakes.
It's really good for the stim tolerant, hell I'm tolerant and this was way too much, mesomorph is dead on the money for me.
Not to mention you seem to come up twice on executioner, not nice 3 hours later when you're trying to sleep.
Plus you crash hard, least I did.
I've given mine to a mate who loves his columbian marching powder, he needs it to be that strong to work which is fair enough.
Nope just mesomorph, mixed with hypermax xt on occasions will do me fine, least for now.