I'm not an audiophile, so I can't tell you how I think the mid range is crisp, but I will simply tell you that when my friend and I swapped earbuds between my vibes and his Shure E3c, (which costs much more) he was floored by how much better they sounded, and how much bass there was for a earbud (shures are notorious for bad bass) Now, I can't submit this as is with only this much info, so
I'll link to a 'proper' review at the head-fi forums, one of the most popular forums for headphones and speakers. But the best part of it all? These earbuds that best $200+ others, are only $90!!