Not sure about your post...will the pack be used to "store" gear, or do you plan to actually use the pack out in the field? If just to store gear, forget these and get a Pelican case. If you plan on using the pack out and about (hiking, etc), I'd look for something else.
The Evolution has a tripod harness, which is a plus. However, the upper storage compartment is pretty small if you want to carry additional items (jacket, food, first aid kit, tool kit, etc). Also, there doesn't seem to be any way to carry a water bottle or two (necessary if you plan on doing anything more than storing gear or urban walking). The Aero pack does not have a tripod harness...the only way to carry one is to purchase some Tamrac straps and lash it to the bottom of the pack...PITA and could lead to the tripod banging against things or people, or getting snagged. No way to carry water bottles either.
It all comes down to how you plan to use the pack. But if you plan on doing any type of hiking, there are definitely better/more functional packs out there. And if its just to "store" gear, there are better options too...Pelican case, or even a Tamrac Expedition series. The Expedition bags are extremely heavy when empty, but will hold a ton of gear (and not much else). My Expedition 7 is camped in the attic and no longer sees the light of day...