I prefer the "drawer" style travel case over anything else. Rolls and anything that lacks any crush protection are automatically out. I usually don't take my watch off until I'm ready to get in line for security at the airport, so something with internal pillows that takes a ton of time to use and has multiple pieces is a giant PITA. Anything where the watch case could hit the inside of a zipper is out.
These solve all of those problems. You can't easily crush them, the watches can't hit each other, it can't fold over backwards on itself and possibly have one of the watches fall out, and you don't have to spend two minutes unsnapping pillows and then put the entire case down while you fiddle with the watch and one of said pillows. Pull the drawer out a bit, slide the watch in, close it up, put it in the bag, done.
To me it makes all other travel case designs seem stupid, at least unless you need like a Pelican case style for some reason.