Looking at picking up some drippers for less fuss use at home. Specifically the KP Long Barrels. Drippers can come in sealed and unsealed varieties. After some investigation what I have gathered is that the sealed seem to work transparently to the unsealed? Unsealed is essentially for bottom feeding mods? As I don't own, and don't intend to try a bottom feeding mod anytime soon, is there any reason to get unsealed drippers, or is performance and flavor exactly the same?