The Halcyon vs the Ballistic Nylon. I like that the Halcyon is lighter, but I do want to "buy it for life", and the Ballistic Nylon seems like it could hold up better and if I was ever forced to check it in I wouldn't have much to worry about. Also I didnt see anything about Water Resistance with either materials. I assume if I got caught in the rain it wouldn't be a big deal?
Also when I go overseas (2-3 times a yr) the savings in weight can be clutch, and I assume the Halcyon can "squish" into tighter spots?