Hi, I own Fiio E10k and Koss Porta Pro and checking out if there is anything new worth a look. I really really like PP sound and I am just looking what else is there. I could use closed headphone but it's not a must. I like warm/bassy fun sound like Porta Pro(so there is not much reason to change it). I also have/had Aurvana Live!(also with mh5 pads), HM5 and Cloud. All in all, Koss is best I had yet. I love the sound and comfort. Over ears made me sweat a bit too much and big headphones cramped my big head lol. Pp sounds open and bassy/fun at the same time and let's me forget it's on my head. But I can still hear my neighboor partying ! ... I've done some small research and found those: Takstar ML-720/750 MFi Takstar ML620 black Sennheiser px95 Sennheiser px100ii Sennheiser px200ii Sony mdr 10 jays v jays skullcandy grind koss sp330 denon mm200 akg y40/45/50 I've tried on and listened to most new sennheiser 2.x 4.x and did not liked any of those. They are not comfy and sound lacking to me. Generally, from what I've tried on in shopping mall (I think it was grind and sp330 but with no sound, just fit), I kinda like on-ear full pillow design. Really comfy and blocking sound.