I like meth for it's versatility with different ROAs, IV being my main ROA, but IV coke is kinda intense, but i prefer to mix it with a little heroin, I always lower my heroin dose and never go beyond 2 speedball shots. I try not to IV coke by itself, but shit, one you do one, it will become an automatic binge, creating roadmaps on your forearms only to keep IVing to get the tinnitus(bellringers) and rush due a rapud onset and DAT/NET inhibition and to some degree SERT inhibition. I don't mind coke during the night but Meth on the other hand, I would have to administer it at the earliest time of the day, due to it's long duration.