Certainly not the Bose. Any of the in-ear 'phones are superior, IMHO, as long as you don't find in-ears uncomfortable.

I've tried the various Shures, and find them better than my previous long-time favorites from Etymotics. The only other one I would look at, and I haven't tried them, is the Ultimate Ears 5pro - splits the price difference between the two.

Between these, it's a matter of personal preference. Audiophiles who are passionate about sound reproduction will spend big $ for small incremental improvements. "Normal" folks have a much lower break even point. I have spent more than I care to admit on home audio, but have been satisfied with the E3c's for a while now. A factor in my decision was the reality of losing headphones this small through the rigors of travel. I'm on my third set, about one a year.