I like the Bose QC15
From the previous owner of Bose QC-1 and QC-2, I prefer the QC-15. The reason I like these better is they are over the ear like the QC-1's and 3's while the QC-2 is on the ear. I wear glasses and do long flights on a regular basis so I find over the ear more comfortable. Besides I think over the ear perform better.
Someone stated beware they break, I have broken mine and Bose replaced them at no charge each time (still under warranty). I recently took in a very old set of QC-1's to the local Bose store and they offered me a good trade up program to the QC-15's (half price I believe not bad for pulling something from the bottom of the drawer).