Hi, I'm new here. I'm looking for a new pair of earbuds, one that I can use to work out at the gym. I mostly listen to alternative rock, classic rock, and some indie rock. I've narrowed it down to the MeElectronics M6 and the Sennheiser MX680's. To anyone that has used both pairs, what are your thoughts on the comfortability, durability and sound quality of each? Also, if anyone could suggest another pair of IEMs that fit the bill, please do. I am willing to spend at most $60. Thanks.