Judging by the fact that you didn't mention your chain, I'm guessing you used Pro 82 with the wrong equipment.
Most cheap headphones work best with cheap smartphones/players, their weaknesses are exposed by better equipment.
Pro 82 is a TOTL headphone at mass-product prices, in fact priced much lower than most mass-product headphones (e.g. M50).
If you want Pro 82 to sound good, you must use DACs/Amps that have synergy with it.
See
Comparison of DACs/Amps
There are some excellent, yet inexpensive options.
Even the haters from the diyah boards admitted to the fact that Pro 82 let's you hear your chain, not itself:
After that the hate train at that board pretty much stopped.
There is no guarantee that you will like Pro 82 after buying a synergy combo, but it's your only chance.
Of course, there are other factors - type of music, quality of recordings, your unique hearing etc.
If you are not willing to take the risk, sell/gift Pro 82 - you are not going to start liking any more than you do now.
SHP9500 is a great choice, I love mine.