These Sennheisers have been our Award-winning cans for two years on the bounce, but they don't win here. Why? Well, not only do the Bose QC15s sound better, they're more adept at noise-cancelling. But the PXC-450s remain a great buy. There's a volume control and a talk-through button on one ear, the latter silencing your tunes in one touch. Sonically, they're dynamic and detailed - and smoother in the treble than the QC15s - but the Bose cans beat them for space and insight.

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