I like mystery ranch bags, been using mine for a few years. Think the most similar to mine of their current line up is the catalyst 26. Very durable if that's top priority. They specialize in military style rucksack type backpacks but have a much wider range today without military/tacticool features like MOLLE webbing and external hardware if that's not your thing.
It's a shoulder sling bag, built well, good for moving around with a laptop. comfortable shoulder strap. Zipper pulls are Paracord so they don't jingle. Inside is all velcroable, which is great for pouches or organizers.
I am pretty sure one of our consultants has this Osprey Comet. Looks decent!
Wow, the Technonaut looks more like a travel bag than an everyday carry, and man, 400 bucks? And I thought my Veto Pro Pac was expensive.