I feel you can’t best the “new style” fly boxes that use the silicon inserts. Nothing is worse than having a fly box that uses “foam” to hold your flies. They get wet, hold the water and three days later your hooks are rusted – wasted more money than buying a good silicon box.
As far as how you put the flies in your box. I feel it’s a personal preference. By species, by nymphs/larva/emergers, by streamers/dries/wet flies. The important thing for me is KNOW where your flies are so when you want a certain fly you know where it is and that you do have it.
