I have just a basic round prong. Personally, I'm not a big fan of the v shaped ones. I've never had a chipped corner and I've had my ring for 9 years. You can see my pic in my avatar.
Thanks LizzyAnn ~ I'm considering rounded prongs. I would like to change mine, the ones I have now are too sharp, I even scratched (minor) my son's face with it
That sucks. I will tell you that I have a 17 month old and I have never scratched him with my ring. Can you post pics of your ring? I'd love to see it!!!!