this may be late in the game but oh well.
how are opiates "better" for coke crashes than benzos or weed? do you mean that they are more effective and have the most power when it comes to killing the crash feeling, or that they make you feel not just better than crashing but good?
because that's all i can think of. it's certainly not safer.
don't get me wrong, i'm not trying to be argumentative or anything, but it's got to be true that mixing any opiates/opioids with any stimulants is at best unhealthy (all drug use is, but this ups the ante to some degree), and depending on doses/tolerance, it could be extremely dangerous or even deadly. i say this mostly because i read things like "opiates work the best", and i realize that most people on here aren't morons and are educated enough to not overdose and/or die, but i immediately think of inexperienced uneducated people reading that and taking more of something or somethings than they should and having anything from a shitty experience to something much worse.
and i realize that what most people consider or recommend as a decent dose of whatever opiate to use for a coke comedown is unlikely to seriously hurt anyone... but i just think it should be said that while opiates may (for many) be the most effective comedown cure, they're not the safest, and they could carry some unpleasant effects (some people don't mind nausea or puking, but i for one would rather eat my own head than puke). i wouldn't say i'm against the idea, but i'd say there are safer ways, and that you should be experienced with both drugs separately beforehand.
weed is a safe way to come down. you can smoke until you're unable to pick up a bowl and you're not going to die from it, so it's not dangerous (not healthy, but more safe than other things). however, it could cause anxiety/paranoia.
benzos. very excellent comedown, and also safe to mix with stimulants. i prefer klonopin, but that's probably b/c i've been prescribed it for years and xanax and valium seem very weak in comparison. but for people with a low benzo tolerance, even a very small dose of any benzo will help, and with minimal, if any, negative effects (the worst i've experienced or even heard of is sleepiness or dizziness).
i've also heard alcohol works well. maybe it does, but how the fuck people can drink on or soon after being on coke baffles me. i can drink nothing but water on coke. and even if i could handle flavor, i'd imagine it would immediately inspire an urge to vomit. and it's not safe. don't get me wrong; experienced users know what they can handle and can drink to come down and be okay (that doesn't make it healthy, but it means they know how not to overdose). but you have to be very experienced with both, separately and together, i think, to use alcohol as a comedown for stimulants. stimulants mask alcohol's effects, making it far easier to drink too much, which can lead to anything from being sick to doing something stupid to serious health problems. also, drugs do enough to the body and namely liver; adding alcohol is just bad news. alcohol in general is bad news, but i really don't think it's a good coke comedown cure, at least not with any regularity.
i'm sorry this is so long, i have a lot to say on the subject of coke and crashes and cures, because i'm always searching for the best and safest ways to stop a comedown. i mean, benzos and weed help, but i'm very benzo-tolerant (i've been prescribed 2-3mg of klonopin a day for years; to feel anything from them -- as in, to feel high, instead of just feeling not-panicky, which my regular dose does fine for -- i have to take 3-6mg, depending on how much i've been taking lately and if there's anything in my system that would dull its effects... like stimulants, obviously, so klonopin helps to an extent but i can't really take like 7 of the things to combat a crash), and weed helps in some ways but in other ways it sucks -- it makes the already shitty drymouth worse, it makes my throat hurt (and it usually does already if the stimulant is coke), it can cause anxiety/panic/dizziness. i've taken trazadone for crashes in the past with some success but i dislike that drug in general so i don't want to use that.
i guess you just have to suck it up and realize that if you're one of the lucky people who suffer bad crashes from coke, short of knocking yourself out, you're going to get some shitty after effects. but god it sucks.