depends . i'm a chronic patient aswell.... and am rx'd morph, oxy and hydrmorphone, now i can state 100000000000000% the following facts.
Morphine is the most potent and effective aswell as longest lasting PAIN killer out of everything, even heroin. (you may say but.. H is morph when it crosses the bbb, but somehow, it does not carry with it the same physical properties that morphine itself does from experience.)
Oxy - aight for pain, but my hate of oxy stems from, i need to take the entire days alottment/2days worth (but i am very very tolerant at this point to opiates so thats a factor) for ok relief, BUT it lasts depending, 2-4 hours then...... the pain comes back with a vengeance like i walked over to mr pains house and shat in his birdbath but has the ability to cause of all pills to cause the most euphoria.
Hydromorphone - similar to morphine being that its hydro morphine basically, a semi synthetic morphine. it carries 75% of the pain relief of morphine in its dose equivilent, have tested this. also has more recreational value than morphine, but again for pain better than oxy lasts 3-5 hours.
i haven't tried fentenyl however, i've heard its basically not too recreational in its own respect, it is physically effective, i havent read into how much for pain itself, but if anyone knows id love to be informed on this.
Hydrocodone... this i put into the codeine catagory other than the fact that i FKN LOVE hydrocodone, atleast the cough syrup, the pills didn't compare but that might be because i drank that syrup like i was on my deathbed but, i'll never forget the bliss.
all opiates are different. Morphine is king for pain, for recreational value, oxy.
infact just to add this - Morphine since it always lasts for me for anywhere from 6-9 hours (and only starts to wear down in effects after 4-6 hours) has allowed me to cut down on my opiates so much so that i'm proud of it. i've cut about 100mg of morphine out of 10-15/30 days of my monthly take. but because its potent for pain, which i genuinely don't 'get off or high' on my pain meds, yes i do get high but thats a side effect that i'll take gladly but my priority is pain, aswell when it wears off, since its pretty noticably gradual, not like oxy where theres the "its starting to wear" "fuck" and "holy shit kill me" phase and then it just wears off till you do feel your pain back up to 100%
ah i wish i lived in the 1800-1900 period where you could buy a tincture of heroin/morphine mix for depression, those were the good ol' days and cocaine if you were feeling like taking that instead of having coffee, and this is pharma 100% pure shit too.. when i build my time machine, i'll bring some back for you BLers