I recommend the TaoTronics TT-EP008s. They're active noise cancelling and only $40. I bought them when I thought I had lost my trusty Bose QC20s. My Bose's were found and returned to me, and I can confirm that the TaoTronics are on par. They sound slightly different, but I don't think most people would identify one or the other as sounding superior. You can also pair them with memory foam tips for better passive isolation, which is complementary to the active noise cancellation (the former works better for high frequencies, and the latter is only effective for low frequencies).
Ehh - I've had QC20s for 5+ years and The TaoTronics you suggested for 1+ year. I would disagree that they're on par.
The QC20s have way better noise cancellation and the frequency response on them (and most Bose products) is more pleasant to my ear as Bose tends to sound better at the lower frequencies.
Yes, the QC20s are 5x the cost - but in this case you get what you pay for.
