OK, now this is a hard one...on my 101st Airborne which is the bow I shoot 3D and will hunt elk with, I have the 1 piece Octance Quiver. I like the option to detach it for 3D and the quick detach feature when out west.
For my General (whitetail bow) I use the 2 piece..
Don't ask me why, but I do
But if it had to be one, I would use the 1 piece Octane