I already have a Deuter GoGo and wanted for weekend breaks have a travel backpack. The Deuter GoGo has a capacity of 25L, the Aspen Sportrucksack to 40 L have. But I can find no significant difference between the two packs.
Of the metal braces, I am also not a fan. It may be good for your back, but that is better solved by other manufacturers (without metal braces)