Which one is better?
what he said, especially if you are using feathers.A tube does not protect the venes or fletchings. When the arrows are stored in a tube, and there is no special foam supporting the arrows and assuring the vanes/fletchings are not being bent, the vanes/fletching will come out damaged or at least bent. Then, you have arrows that will not fly properly.
On a hunting trip, having messed up vanes on your already tuned arrows, is just as bad as having something wrong on your already tuned bow.
A case that properly protects the ENTIRE arrow, and has some sort of support that keeps them all seperated, is the best way to go, IMHO.