Unfortunately the smaller ones tend to not be as high of quality. Shure SE 215 or SE 315's are high quality headphones often used as monitoring headphones for musicians. They stay in your ears well (if you use the right size earpiece, 3 sets of memory foam and 3 rubber ones are included), cancel ambient noise well, and have a very clear sound. Bass is accurate, but accurate is often defined as "weak" nowadays. They are also built to take a beating, and should last you a very long time.