Another thing I just realized is that the stock Apple buds don't give you sound or comfort fatigue like other in-ear buds do.
For example the typical in-ear buds like the Beats by Dre and its clones do sound better because of noise isolation, but think about that isolation. It feels like your ears are too plugged up and the sound pocket is overwhelming. It gets intense after awhile. You can't listen for too long until you feel like you want to take them out and let your ears "breathe."
Not to mention you have to clean your ears with Q-tips every day cuz of all the grease and sweat that happens from the isolations cups.
As far as sound, that booming bass is more like a condensed tunnel/pocket of intensity and is not as pleasurable as feeling the bass in your whole body from speakers. When i take them out, it feels like my ears have been bombarded with intensity in an unhealthy way.
With the Apple buds, I never get uncomfortable or need to take them out. That might be a reason why they are stock.. Because they don't fatigue people.
I actually find them quite uncomfortable to wear. I used to use them all the time with my nano until they broke, and I could never listen for more than half an hour. Now I have in-ear earphones that fit correctly and I can listen to music all day (and they aren't flat and tinny).