Are these for on or off mountain use or both? If they are going to be used on mountain at all, I wouldn't suggest noise cancelling for on-ear style headphones.
Cheap on ear options(<$50): Kicker HP201 (best bass and sound quality I've heard, blow away Skullcandy Icon2, Aerial7 Metro), Nixon Whip (decent quality, a bit fragile), Urbanears Tanto or Plattan (both have 40mm drivers, one is low profile one is a bit bulkier).
Even when riding, I can hear a difference on my iPhone. The Skullcandies have noticeably worse fidelity even with the noise of riding and the Aerial7 are just thin and weak. The HP201 might not be home theatre quality but for 30mm drivers, they can put out some decent sound which is noticeably better than those other two.
House of Marley has some sick options but they're a bit bulkier and might not be as easy to ride with. I'm hoping to get some this season to demo.
Edit: I'm also hoping to demo some of Skullcandy's 40mm driver options like the Lowrider, Hesh and GI because I've heard the sound quality is a bit better and you can find them pretty cheap online. My comments about Skullcandy are limited to the Icon2/Icon.
Last edited by CheeseForSteeze; 12-15-2011 at 02:47 PM.