I have Klipsch (forget the model #, but they probably have new ones by now). Comfortable, very good sound, at the time they were about $70.00 at Best Buy or Amazon. They block exterior noise very well. The only negative is that I have to adjust them, particularly the left one, if I'm doing something active.
I typically don't run with them unless I'm on a treadmill, then have to adjust the left one every 5 minutes or so.
I tried the Bose but found them a little uncomfortable - I was also concerned they might not block enough sound on a plane, but they might be a bit more stable because they don't require a perfect seal (comments, Matt?). If you have a Bose store near you, they let you try them on. Most stores don't let you do that.