I have both, no way to really advise you which is best, they're both very good but with different sound signatures and presentation. I prefer the T5p (so far, only had my ED8s a few weeks), but I'm a long way off finally making my mind up about which I prefer. It will depend a lot on which genres you listen to, what aspects of the sound you place the highest value on (soundstage, imaging, resolution, presentation, PRaT etc). People will be better able to advise you about which might suit you best if we had more information on your listening habits and needs, what other headphones you have/have had and what you liked about them.