I occasionally travel by air for work, and it would be very nice to have a smaller duffel that can fit beneath the seat and double as a daily briefcase. My EDC from Frank Clegg is too small for that. I am between these three:
1. From Frank Clegg This has the best handicraft of the three, but it may be the least practical as it cannot hold a laptop well and doesn't have a strap for suitcase handles. The leather of it is beautiful, and it is aesthetically my favourite.
2. Waterfield Designs
This comes with a pocket that I can attach to suitcase handles. It is made of canvas rather than leather. I'm not fond of the aesthetics of this as much, but it seems practical and is the cheapest of the three.