I need some advice if I even should try those. I read the reviews of in ear Momentum and they were bad. Then I read the reviews of M2 and they were mostly good.I asked Sennheiser support and they said that they had to rename M2 as in ear HD 1. I ordered those, with 30 days return, from Sennheiser but.. I am having second thoughts. There are so many IEMs the $99 range and i have really no experience with in ear. Any comments from the users of M2 of HD 1?