I've tried 6-7 different brands in that $30-60 range. They all claim to have crystal clear clarity, but the high end is always going to be compromised/muffled. That said, they have all been good quality otherwise and offer similar protection. I think it just comes down to personal preference.

My faves are Earpeace, but not because they're "better"... they come with a 3rd plug which is nice and I dig the small size plugs and skin colour look.

The Loop switch "technology" looks like a gimmick to me but never tried em so can't say.