I can help you out. I used to work at Daddy's here in Boston, who is a dealer of Access bags and cases.
They should have the Stage 5 bag in stock.
FYI I think the new stage 3 bags are better than the stage 5. The 5 is really heavy and the straps are detachable via metal clasps. If you are looking to carry is on your back, forget it, it's too uncomfortable. The new 3 bag has magnets on the built-in backpack strap that hold them against the back of the bag while being carried with the side handle. Either way, both are nice.
I ended up settling on a Mooradian over both of the Access bags, but like all things YMMV.
Hopes this helps!
PS If you want, PM me and we could work something out on getting a bag out your way.