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 headphone, from its robust build quality, balanced sound, and excellent noise isolation. Although they don't offer active noise cancellation, these in-ears do a great job of blocking out noise whether you're commuting on a train or flying across the country. We loved the iDX 200 iE's predecessor, the Beyerdynamic iDX 160 iE, for its slick design and balanced sound. The iDX 200 iE are an improvement over the iDX 160 iE in just about every way, making them worth every penny of the $199 (?199, about £169 and AU$288) retail price. Design The Beyerdynamic iDX 200 iE feature an understated and somewhat generic design, with its "bullet" shaped buds. The earbud housings are made from a titanium alloy, which makes them super light and strong. Because of this, the substantial build quality of the iDX 200 iE should stand up to abuse.