networkn:
I've been looking at this over the past few months preparing to replace my carry on luggage. I got the Samsonite backpack from Strandbags for around $190 I think. It's very good quality, carried everything I needed it for.
I also bought a Matein from Amazon which arrived today. Quite a bit smaller, and ligher with lots of extras like USB etc, for about $72 landed. I am impressed. Unsure if it MIGHT be a bit small for you. The Samsonite is good.
Slightly confused: are you talking about the daily use backpack I asked about, or luggage?