Ive only aquired pure crystal meth once. I was awake 7 days straight with amount that was less than 1,5 grams. It was really fucking strong to say the least. I ended up having a massive fight with my gf of that time on the last day and I took 300ug of LSD and things got pretty psychotic lol. But when I was coming down from acid I was still feeling very functional. The feeling was like I could do another week straight if id had stuff left.

Meth and a-PVP ("flakka") have this demonic glow in them that allures you to use them. Like your every cell knows its evil and burns your soul but still you want to touch it so bad.