[Leica] How to hang prints

[abridge at mac.com (Adam Bridge)]

After an extensive remodel I'm about to hang prints.

Yippee!

But I wonder what's the best way to do it? I want rotate images for variety 
at least. The museum answer is often to suspend the framed images from long, 
thin wires suspended from the wall near the ceiling which makes fewer holes 
in the wall and the paint and certainly puts those holes where they won't be 
easily seen. It does expose wires, however. The other way, obviously, is to 
use hangers behind each image but that means that a new framed print will 
almost certainly require new holes unless the print is the same size.

I'm looking for thoughts about how to do this. Please share?

Thank you!

Adam