I'm open to other suggestions.
In short, I'm looking for a pair of sturdy and sweat-proof IEMs to work out in. I'll most likely be doing lifting, running, and rock climbing with them. I'm looking for the best build/sound quality ratio. I realize something will give and I'd prefer build quality to amazing sound. From the reviews I've read it looks like the Monster (barf) has better sound quality while the Sennheiser looks to be a bit more sturdy. I looked at the MEE S6 but a lot of reviewers seem to bemoan the build quality. I'll be using my Samsung Galaxy Nexus or maybe even Nexus S as a source while listening to more bass heavy music (hip hop, instrumentals, etc.)