I know what it's like to be tempted by the bags. I recently purchased, against all common sense and history, the Synapse. I did this knowing I have had a bad shoulder for years. I piloted it for a couple of weeks around the house with varying loads typical of what I normally carry. Sadly, my shoulder, while healed, simple does not have the load bearing capacity for a backpack - nor the range of motion to easily remove the pack without a lot of wincing! The Synapse had to be sent back - too bad I really liked the design functionality and color (navy/solar). I now just have to find solace in the Tri-Star, Western Flyer, ID, and numerous pouches, cubes and the like I have.
On the positive side, I am eagerly awaiting the gym bag on the horizon - my next likely purchase!! By the way, luggage tags are on the way.... at long last!!