Summary: I had this product for about a month, and I love it. I work at an office with a lot of computer noises, and I can enjoy Miles Davis's trumpet sound totally isolated.

It fits perfectly inside my ears, and I love jogging with it.

The sound quality is great, too.

I totally recommend it.

Summary: These IEM's probably have the biggest bang for the buck of all the competition. If your looking to buy these though, you may be better off just getting the ER6i especially because they come in both black and white now. ER6 may have a little less bass and less efficency, but if your using a decent source and an equalizer those problems dissappear. The isolation of these is amazing and very useful. Remember to be patient because all IEM's will be uncomfortable the first week or so. I think that you would have to get the Shure e4 or UE 5's to notice a step up from these. Forget the cheap sonys and the cheaper Shures, you wont be dissapointed here.

Summary: This is my second pair of these earbuds and I wouldn't buy anything else. I had the first ones for years until one of the sides stopped working. I think the wire was cut inside from improper winding. They work so well as earplugs that I'm cutting the cables from the old ones and keeping them.

Sound is great. They are also really comfortable and I don't mind wearing them for long periods of time. I usually keep them on in the plane even while sleeping.

The only down side is fact that the filters require regular changing. It's easy enough to do but it must be done every few months (6 or so for me since I don't constantly wear them). It's good to have spares since it can take a few days to get them.