We use some pretty huge snaprings in some of our products. The only ones we had in the shop were the pliers you posted Russ; and they work great. Only thing we don't like is that you can't replace the tips and they're kinda small. When we came out with our modular countershaft design; we needed a safer, stronger set of pliers, with more leverage. So we use these for the big'uns.
Retaining Ring Pliers by PROTO - Retaining and Lock Ring Pliers by Zoro Tools Industrial Supplies
Anyone who installs a lot of snaprings, or gets fatigued easy, should think about it.