Ever try combining tramadol & codeine?
That always made for a lovely high during the period I was able to abstain from oxy for a few years.
I preferred tramadol out of the two, but adding codeine made it more sedating. And the tramadol caused the euphoria.
I know you said in 1st post you don't like tramadol, but a combo might be worth a try? It kept me off the stronger stuff for quite a while... And it's better than going straight for the hard stuff. I never considered pentazocine that strong though. I just didn't like its kappa affinity. Gave me nasty side effects so I didn't use it for very long.