^ This is all about personal impressions. For me heroin is the most overrated opioid available (probably because of its wide availability), it IS different than morphine in feeling, although what causes heroin high is actually morphine and 6-MAM, but heroin gets metabolised in the brain so much that its high is much less of a body high than morphine's. And talking about euphoria, levorphanol is very euphoric. It doesn't matter if you get rush or not (i.e. feeling similar to that after i.v. injection of morphine/heroin or other 3,6-ester of morphine/hydromorphone and so on), but when it hits you, it leaves you very deep in your nod for such a long time you can spend the whole day nodding out. If euphoria is equal to rush for someone, then dextromoramide or dipipanone is the way to go. This is all personal until we get to opioids like pentazocine or nalbuphine which can still be euphoric to some people if they have never taken opioids that are full mu agonists (but this is only a part of action that causes an opioid to feel euphoric because when I think of something with a high mu/kappa and/or delta ratio agonism, then I see little euphoria, e.g. fentanyl, it's dull).
Concerning benzodiazepines, I could also call a lot of things written "bullshit" because I don't find some compound helping at all. I have written many times that temazepam is nothing special to me and it's banned in many countries, compared to flunitrazepam as being strongly addictive. Another one overrated is alprazolam causing even at low doses somnolence in many people and it should be anxiolytic. I nominate bromazepam as the best anxiolytic benzodiazepine causing no somnolence, go ask people with little to no tolerance to this shit, I did. It doesn't matter it's active at much higher dose than alprazolam. Clonazepam is probably so famous only because of its strength, I've been pinned to it for a long time and it was only because tolerance to benzodiazepines I abused had become too hard to control (I had to dose lorazepam/estazolam a few times a day not to shake). A good and strong anxiolytic-anticonvulsant is probably lorazepam because it stays in the brain as opposed to diazepam which may be all right for an epilepsy attack but despite its long half-life most of diazepam will flow and concentrate in other human organs.
Triazolobenzodiazepines and imidazobenzodiazepines are probably the best solution for insomnia but they're considered kind of old, e.g. estazolam vs. zolpidem, but they're definitely more efficient for me than any of Z-drugs (of course now they have zero effect on me unless taken in large doses as I'm on clonazepam all the time). But thienodiazepines aren't available everywhere as medications. Etizolam or brotizolam are not marketed in my country but I find them really good for problems with falling asleep (I don't use anything for sleeping problems any more as I eventually found out that I've got problems with cortisol levels in the evening... well, physicians are terrible, for years I self-medicated myself with adding benzodiazepines for insomnia to clonazepam, smoking marihuana, and whatnot.
