Etymotic is the Sh*t! I use the ER-4S myself, which I liked better than ER-6 models, but to be honest with you if I wasn't willing to spend the extra cash, the ER-6 models would have worked.
Wayne
I agree that Etymotic is the shite.
While I don't have their headphones, I do use their earplugs. After YEARS of loud music I have the dreaded tinnitinus (sp?) so it is a MUST, even though I do forget at times and pay big when I do. If you aren't already using some ear protection, please do so now. Take it from someone who must have white noise of some sort to go to sleep, bummer ...