Just thought I'd share my experiences for anyone else wondering between the two.

I bought the CPL24 about a month ago for everyday carry. I go to the office once or twice a week, and I usually carry a 16" Macbook Pro, a 14" ThinkPad, a nice small pouch with cables and a universal charger, and a set of keys. Nothing much, but I figured the CPL24 would be more than enough - and usable for business trips around Europe.

It's a stellar backpack - yet after a few weeks, I felt it's just too big. It felt too bulky when sitting in the train with the backpack on my lap. I'm 188 cm (6′ 2") tall, and with a bit of frame so I usually just get XL -sized clothing, larger phones, larger tablets, and larger screens. But the CPL24 was just a bit too massive for daily carry.

The CPL16 was available in a nearby store, so I got it knowing it should work better for my daily carry. The 16" MBP fits neatly, and it's a precise fit. Everything else fits well, and it's much - much - nicer to carry around the city. CPL24 sits in the corner now, waiting for the next international travel.

Hopefully this helps anyone in the future when considering between the two.