Great! Glad you found something that makes you so happy. I know the feeling. I haven't tried the Shure's, but I sure do love the Etymotics ER4's. Since you mentioned that you love quality audio, I thought I'd say that the ER4's are fantastic, blows anything else that I've tried out of the water. (Better sound quality than my Grado SR-325 headphones, if that comparison helps.) After listening to the ER4's, I couldn't believe how much I had been missing.