I am looking for a medium size (for a woman) shoulder/messenger bag that I will use when flying either hanging from my roller bag (I use a strap to hang it not a sleeve) or alone when I check luggage (when traveling with kids). I am not sure which bag to choose-the Id, Ego or Zephyr. I usually travel with a Macbook Air 13, a couple of magazines, a kindle, my stuffed full quart ziploc bag , small cosmetic case, misc items like tissues, hand sanitizer, sunglasses, wallet, pen, notebook, granola bar, iphone, chargers for phone and computer, ear buds and travel docs. I also like to pack a lightweight travel wrap and a change of undies. If I could squeeze in a spare shirt, rolled up, that would be a plus. My current bag has one large center compartment and no dividers or organization so the electronics, books, etc. all move around and I can't find anything-drives me crazy.
I prefer a bag that has a carry handle in addition to a shoulder strap and an outside pocket for a water bottle. I want something comfortable on my body, preferably messenger style, with organization. I don't need a bag specifically designed for a laptop as I already have a sleeve-just big enough to fit my Macbook Air and my other things without it all falling over into a jumble. I don't need the special laptop features-as great as they must be for frequent travelers- so I'm leaning toward the Id or Zephyr. I like the more structured look of these two but am not sure they will hold all of my stuff and the Ego seems bigger. It looks to me like the Zephyr is the smallest and the Ego the largest, with the Id in between? As much as I try to travel light, I end up carrying all of the stuff that moms tote around!
Anyone with experience with these bags who can help?