I have never taken bupe as an opiate naive individual, but IMHO, it is hands-down, the shittiest opiate ever. No real euphoria (for me at least) and hard as shit to get off of if you have been on it for any length of time. Plus, in my experience, once you have been on bupe maintenance long-term, it takes about three months of abstinence before you will feel close to normal and experience full-blown euphoria from a full agonist. Add to that the months-long, drawn out, enervating, crushingly depressive withdrawal, and you have a formula for worst opiate ever. Methadone sucks too, but at least it is a full aggy and gives you a nice glow.
DHC is not bad at all. ~240mg + 2 or so beers gets me feeling very nice. I happen to be one that enjoys codeine (or at least I did before my tolly got out of control).