[falcolas]

I use Down Beats[1] while riding a motorcycle, they work very well at eliminiating the wind noise while still letting me converse with others.

The one thing I like about them over the similar Etymotics is they don't stick out of your ear quite as much.

[1] http://www.amazon.com/gp/product/B00A3Z44R2/

[plorkyeran]

The bit that goes in your ear is also shorter than the Etymotics, which is good for me as my ear canal seems to be too short for the ER20s to fit. I tried about ten different ear plugs and the DownBeats were the only decent-quality ones that I could comfortably wear for hours.