Normal resting position for sway bar?

I've always read the best position for the bar is parallel with the ground when viewed from the side. IMO, they work in different positions, but that one is supposed to be "best".

Then, there are some that say the bar should be parallel with the strut rod. I'm sure it's probably mentioned in the MP suspension book somewhere. Mine is buried in a small book case under a bunch of furniture, or I'd dig it out for you and look.