We will say that Klipsch's oval ear tips tend to fit in funky ear canals that typically reject round ones, but if you're still hellbent on a pair of cans, we're hoping our audience below can toss out some advice. If they can hear us from underneath their noise cancelling headphones, of course."Hello Engadget. I've always been a fan of high quality audio but I have a problem. I need noise cancelling headphones, but active noise cancelling gives me a headache and my ear canals aren't round enough to use in-ear earphones. I've also looked into custom earphones but I can't afford paying $400 or more for a set. What are your recommendations for the best pair of passive noise cancelling headphones? My ears thank you."