Could you please list those better quality and less expensive alternatives for my edification? :) Especially active noise-cancelling headphones that are better quality and cheaper than QuietComfort. The Audio Technica ATH-M50s mentioned in this thread look like a pretty good less expensive alternative if you don't need low-frequency cancellation, but I'd love an affordable pair of active cancellors for flights.
Corrective upvote since you answered half the question. XD But yeah, I wonder if Bose's consumer-level reputation of having no competitors that are both better and cheaper is deserved. Hopefully Eikenberry can answer that.
I've never liked the Bose sound, but I recognize that they do some things well; those just aren't the things I care about the most. I wouldn't say they're overpriced, though -- it's hard to argue that when their products sell so well. Maybe some of the others are underpriced ;-}
I have a pair of on-ear Bose headphones that I bought when I didn't know any better. In hind sight they don't sound great.
BUT, they are the most comfortable on-ears I have ever owned and possibly the most durable headphones I've owned. The model was recently updated, and I think the changes are improvements.
In that light, if you want a really comfortable, quite durable pair of portables, They are a reasonable choice.