Have you tried the manufacturer's websites?
Here are the things you may want to consider besides the overall width of the back of the saddle:
-the width of the spots where your sit bones rest on the saddle
-the curvature across the top of the saddle (even if the saddle is the right width you can feel like you're sliding off both sides of the saddle)
-the width of the nose (too wide chafes the thighs)
-the curve of the interface between the nose and the back of the saddle (gentle or sharp - affects the back of your legs)
-shape of channels or indentations near soft tissue
-the transition of the saddle to any cutout
I've just found that the overall width of a saddle really doesn't have much to do with comfort, it is all these other things that do. Sometimes this info isn't provided and you have to ask someone to actually measure it for you.
I'm with you on the padding. Give me firm!
Frends know gud humors when dey is hear it. ~ Da Crockydiles of ZZE.