depends on the batch tbh.
for me, there's a difference between 120 and 150. 120 has me where i want to be, 150 has a bit more gurning and "guys im absolutely FUCKED" quality to it. never had a problem with being too monged out myself i'm always quite energetic anyway and i make sure that i dance when i'm coming up to get me in an energetic dancing mood for the rest of the experience. 130mg/140mg i've only done with this mandy i had that was cut with a little bit of speed (could tell it was just a little speed) so i didn't mong on that ofc haha
i'd say if 130mg makes you feel good but a bit too monged just drink like half a red bull as you're coming up, or put a bit of caffeine powder (it's cheap as chips) in your bombs. some people say 10mg-40mg of caffeine powder in their bomb is all they need to counter the mongy feeling. might prang a bit on the comeup if you're prone to that though.
i got a mate though who says whenever he starts feeling mongy he just goes to the centre of the dancefloor, waits for the buildup to the next drop, puts his hands in the air and tries his best to just go fucking mental on the drop and then it gets him in a hyped up mood. which is pretty much what i do as i come up i suppose.
but yeah man im getting some really clean mandy for global gathering gonna go for about 125mg and have a couple of pro plus on me just in case.