New purchase, I don't have an estimate for durability over time yet.
Beyond that, then, the following:
+++
Capacity
Price
Colors (I bought the two-tone brown)
Pockets/organization
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Since I do not use the MOLE system, and given the size/use of the bag, I find the existence of SO MANY compartments somewhat excessive.
With a few minor changes, it could have even better organization, e.g., in one of the two compartments (large and small front pocket) to have slots for pens, or on one of the two side panels, instead of all the MOLE slots, to have a pocket for a bottle/water, instead of only internal ones.
I should also add, although it depends on each person's choice, the very prompt and careful shipping from the store.

The bag is fantastic. For anyone looking for this type of bag, it has no rival. So, it is a very nice size, very high-quality construction, it has the right pockets in the right places, the strap is a bit long but by folding it and passing it through the loop you can shorten it as much as you want, and the zippers seem durable. I got it in green, which is cordura, while the gray ones are nylon. It costs a bit, but it’s one of those things you’re glad you bought. VFM