Hm, I hope you didn't pay too much for these in case you aren't happy with them. BOSE certainly aren't known for their headphones, epitomized by the age old joke acronym "BOSE, Buy Other Sound Equipment". Admittedly though they're probably still better than iPod buds, but you could do a lot better for the price if you paid anything near retail. I'd personally recommend Shure for in-ear buds as I've had good experiences with them and they're a generally well-regarded brand for in-ear buds. I eventually sold my E2c's but only because I realised canal phones weren't for me, though I did get a good price on them.
The old saying used to be: "No highs, no lows, must be Bose." I own a pair of Etymotic Research ER-4 ear-canal phones and they are awesome-- in terms of sheer detail they are better than listening to $20,000+ loudspeakers. And on airplanes you cannot even hear the engines when listening to even soft music. I bought these long before brands like Shure and other mainstream even offered such a product. Seems like it was only because of iPod popularity that this style of earphone finally became widely available. Since I've had them for a while, I'm curious how much of an improvement I'd see if I switch to something like one of Ultimate Ear's newest top of the line products.