Competition in the sub-$200 in-ear headphone space is fierce, but Beyerdynamic's flagship iDX 200 iE may be one of the best. The iDX 200 iE sit at top of the company's in-ear headphone offerings, and after spending a week with them, I think they fully deserve the crown at the top. Beyerdynamic nails just about every aspect of what makes a great in-ear...