After some research I chose Walker Display Picture Hanging System which is used by several of our local galleries. Here is their website- Walker Display Here is how it looks on a wall in my studio-
This is just part of one wall, I have two walls of display.
I chose these components, but there are a number of options-
Picture molding with a sleeve hook, the molding painted to match the rest of the woodwork. Metal molding is also available.
I used a combination of fiberglass and steel rods because the fiberglass rods bow when holding heavier paintings. The fiberglass rods come in clear if desired.
I also use a combination of these parts-
I can tell you that this system is strong, durable, and infinitely flexible. They now offer a metal cable as an option instead of a rod. A downside is the visibility of the rods, if that matters to you. All of the above components must be hand tighten but it is not difficult.
Another good option is Gallery System Art Displays. Website is Gallery System
I had the opportunity to do a one artist show at a local realty and this was the system they had installed. Here is what the relevant parts look like-
Here is one wall of my show to give you an idea-
Lastly, I am familiar with another system that is used in our Town Hall. Our art guild has a rotational exhibit there and several of us, myself included, are responsible for re-hanging the work several times a year. (This led to a previous post about framing hardware.) This system is AS Hanging Display Systems- AS Hanging As with Gallery System Art Displays, two cords or cables are needed for each painting. The clear nylon cord is almost invisible which is very nice aesthetically. The cords curl at the ends so must be tucked behind the painting for a clean look. Steel cable is also available with a self locking hook similar to Gallery System. The mini hook is the least expensive but has a weight capacity of 12 lbs. each and must be hand tightened via screw eyes. I really don't like this feature, so if budget does not prohibit I recommend going with the self locking hooks or buying a combination and using the self lockers on heavier paintings. As you can see below this is visually very pleasing.
That is all I know about hanging systems. You can't go wrong with any of these, but personal preference and what you want them to do for you will influence your choice.
Thanks for reading, and see you next year!