The Crumplers, Think Tank and other specialty brands are very nice, but I decided to stick with Lowepro after loving my SlingShot 200 (and 100 before that).
So I just received my new Lowepro Flipside 400AW. I liked the design and the price was sub-$100 (new) which is far less than selling at the stores.
- Supposed to fit a lot of stuff (I wanted a "bring whole studio" or "2-body day out" bag). Still keeping my slingshot for casual light load days.
- Opening is against your back which 1) provides more security, 2) Keeps the opening clean at all times and 3) permits the "flipside" where you swing around your belt to access your gear without removing the pack.
- Can fit the big 70/80-200 2.8 lens.
- It feels good even fully loaded...still heavy, but not the bag's fault I packed all that gear
- It's big on storage but not too big
- Does not stay open wide and straps can get in the way when loading the bag
- I question the room for body #2 when all other accessories are packed
- The front storage pocket is not super-spacious for clothes, etc.
- No laptop storage which I was not seeking.
- Little pouches in the main compartment do not offer much (see photo)
- It's big on storage but not big enough :-)
Hopefully pics show below where you see my D90 "studio" load. Swirling clockwise from upper left: Cokin filter holders, Flash #2, Empty (chargers will go here), 80-200 f2.8, 50 1.8, D90 w/ 35mm 1.8, 77mm flower petal hood, 12-24mm f4, 105mm 2.8 Micro D, 3 Cokin filters (middle top) and flash #1 (middle bottom).
Absent: My old D40 kit with 18-55 and 55-200 which I could squeeze in if I remove some of the redundant stuff for 2-camera day.
Hopefully this helps others visualize.