MDR-V6 in ear bud equivalent?

[anamaniac]

So, I intend to buy a Cowon S9 32GB and fill the thing with flacs, and a set of Sony MDR-V6's.
However, for work, I need buds. I've grown accustomed to in ear buds (better noise cancellation, which is important since my workplace is extremely loud, and they fall out less often). I would like to use a set of V6's at work, but my boss already told me no to headphones (not supposed to listen to music in the first place, says our safety guy, but it's overlooked, but I'm cautious anyways since one of my coworkers was just fired).

So, something cheap, loud, and high quality, just like the V6, but in ear. $100 is the budget.
Recommendations?

 

[Guest]

As per earlier request, please edit your baseline -- we're having a drive against "bad" words on the forums so that Toms doesn't get barred from schools etc.