Location for Flight Plan (.plg) Files

[b3burner]

When I go to save a flight plan I've created, it gives me the option to put it anywhere I'd like, but is there a place where it works best from?

Right now it wants to put it into my Documents/Plan-G Files folder, but it wants to sit it loose in that folder w/o putting it in any of the specific sub folders.

Should it go in either the Charts, Data, Profiles, Trail, Vatsim, or WX folders; or just leave it loose sitting out on its own?