Hey guys, So I'm looking to invest in my first pair of cans. I have just used earbuds previously but fell in love with a friends headphones. However, there are a ton of headphones out there and I have no idea where to start. I only have several requirements for my future set of headphones First I am looked for closed over the ear headphones ( I wear glasses so they need to be fairly comfortable) I plan on using them for walking around my university campus and traveling. So extra noise isolation and minimized sound leakage is a plus.That being said they need to be able to be powered by an iphone. I don't plan on buying an amp. I've looked at the m30s but they have an uber long cable which isn't removable. I would prefer to have a removable cable but next to that a shorter more on the go length cable. I also want a decent sound quality, I know I can't expect a 100 dollar headphone to sound like a 700 dollar one. But some headphones appear to be clearly superior to others even in the same price range in sound quality. Last but not least I am hoping to spend no more than around 70 dollars. I know it isn't much but I am on a student's budget. I don't care what the retail price is; if i can buy a refurb headphone for around 70 bucks feel free to suggest it. That all being said, does anyone have some suggestions? because I am feeling totally lost and overwhelmed. Thanks for the help.