This pack can be taken on year-long trips around the world. It can face an unimaginable number of different environments and take a huge amount of abuse. After all that, it can still be used actively and works just as well as a new bag.
Because the laptop compartment is located at the front of the pack rather than against your back, it can make the bag feel heavier. The laptop compartment can also curve if you pack is full, which can cause the laptop screen to crack.
The Redwing 40 has loops at the front for hanging things off of, and mesh pockets for holding anything that may need to dry out. It has large pockets on both sides for water bottles, and a compartment at the front with lots of internal pockets for organizing.
There are no internal straps in the main apartment to keep clothes from moving around. And due to the fact the top of the pack zips away, you are left with the main compartment having 3 walls instead of 4 when unzipped. Combined, it's hard to keep your clothes and other belongings where you wa...
The J38 is a versatile pack, but not specifically designed for travel. It has some features you may not have a use for (such a pole loops) and is lacking in features you may find helpful (like a laptop sleeve). The shape is not ideal for storage (under seats, or in the overhead).
Not a great option if you're looking for a pack you can wear while exploring the city. There is no hip belt or hip strap, so all the weight of the pack will be on your shoulders. The shoulder strap padding is fairly minimal, causing them to dig in.