Large cords are not a problem for me. roll em up rubber band them and your good to go, I don't find them overly bassy either unless the song has a lot of bass. I find them the perfect portable, they are solid, very few moving parts and very durable the cord you won't have to worry about it snagging because it's so tough. size wise i find them not big at all, I use my k550 for my portable for similar reasons but the beyer i find better. sweating is not an issue either with the velour pads. Comparing them to open phones at that price point is unfair, for closed you won't get much better at any price point. any phone can be a portable it depends what you are looking for and how you manage it. for me liek i said cord rolled up and good to go, also the beyer don't NEED an amp but they do benefit from it. they run fine out of an ipod/iphone no problem with decent volume level, with an amp it sounds the same just bigger very easy to drive a fio e5/e6 is enough for the job if you want to try an amp.