Familiar with previous quality and design from Arc'teryx it was no surprise that my 4 day trip in early OCT to the High Sierra carrying the Needle 55 was a total success. The pack is light but not minimalist. It carries the load extremely well. The hip belt is thermo molded (Arc'teryx pioneered that) and it distributes the load like nobody else.
The shoulder straps despite being small did the job superbly. Size and shape is ideal for weekend trips up to 4/5 days, that's if you know how to travel light.
For people taking the kitchen sink with them, look for a larger pack. Despite six other packs that I own, this one is now my favorite. My only minor concern: having a rather long back myself, the pack was at its limit as far as sizing.