I also have that style capper, got it in the early 90's. the newer cappers don't dimple the bottles.
I believe this is the capper you want if you want a wing capper.
http://morebeer.com/view_product/15673//Bottle_Capper_-_Emily
Or you could purchase a bench capper.
Go to you LHBS and ask them to test their cappers. Bring a bottle and some caps I'm sure they will help you with the information.