I understand. The PM-3 was the headphone on the top of my list to get to replace my Fidelio X2s- they were wayyyyy to bass heavy for me, and I listen to a lot of Hip Hop. I like accurate representations of the music that I listen to and I thought the neutral PM-3 would satisfy me. However, I decided that I would might as well buy an end game headphone. That being said, I'm still a student on a budget and I would like to spend as little money as possible. I can get the Alpha Primes for 650 and the Omnis for 750. It's hard to choose...
Would you guys say they are bass heavy? I like more neutral sounding headphones.
The X2 is decently bassy for an open headphone. Honestly, I don't think you're going to like the Omni if you find the X2 "wayyyyy" too bass heavy. Given your preferences and your budget, I'd say your best bet is either to stick with the PM-3, or maybe look into the ZMF Blackwood (not the Blackwood Omni, just the Blackwood). You'll probably like the HE-560 also, but I don't know if you really need to drop that much cash at this stage.