Should be getting some extra money soon and looking to replace my hd428s with something with a fabric or whatever cushion and more bass preferrably. Looking on Amazon i've found a few sennheisers i'm interested in and depending on what i get, I am also looking at some portable amps. Here's my current list: HD518 - $120 HD558 - $180 HD598 - $222 These will be used with my computer (motherboard audio, no sound card or room for one) and iPad. If i get the 598's, that's it, nothing else, the 558's i am thinking about a FiiO E6 + L9 LOD, and with th 518's and 439's I am not sure, the E6 seems nice and not too interested in spending like 70 on the amp. Or would you guys recommend just getting the FiiOs for my 428's, would be a lot cheaper. Was looking at sennheiser because i know they are good and no clue on the amps, also interested in AudioTechnica and Sony is good IIRC, i am open but prefer to stick with Sennheiser if possible. And I prefer to buy from Amazon, good experiences with them and i have a 20 dollar credit with them Oh and i really prefer over-ear obviously, in-ear is an option if i keep my hd428's but i'm not sending close to $100 on in-ears. If possible i would love something portable or some kind of case for them, my 428's barely fit in my bookbag and i dont like having them there, worried they'll end up broken, but if i must i'll just wear these on my neck all day.