My biggest problem with IEM's (In Ear Monitors) and other types of earphones that go inside the ear canal is that they are either uncomfortable for prolonged periods of time or they are simply hard to get in properly. Many of the "premier" companies like Shure and Ultimate Ears require the user to squeeze the foam, jam it in the ear and then wind the cable up and over the back side of the ear. I have never found this easy or comfortable.
Fortunately, the IMAGE earphones don't require the user to do any of this....
I need to preface my remarks about sound quality with a reminder that I have been most fortunate to test pretty much all this big names in earphone design. I have listened to amazing earphones from Ultimate Ears, Shure, Audio Technica, V-Moda, Altec Lansing, Sennheiser and others. That being said, I have never heard anything that rivaled what I heard when I put the IMAGE earphones in my ears. I really did not think that I could be that blown away - but I was.