I haven't had enough time today to get started, so I've done some research on the net instead.
I found a few interesting sites.
So having looked around and found sites that sell the metal boning, I think I might go for that instead of the bendy nylon, because it gives much more rigidity to the corset. That's how I think a corset should be.
The more rigid the better 
The one in the photo allows for some sideways movement (for more comfort), whilst giving vertical rigidity. Perfect.

louisa-outram
Pro



I like the corsets with stronger boning
My fully steel boned one is my favorite
They seem to fit and feel much better!!