Ben wa balls/love eggs etc can be used to tone your vagina so you have stronger orgasms. Ben wa balls move inside of you but don't really stimulate you to turn you on, you'd need a vibrating one for that. As I've said, I'm really impressed by the fun factory ones, but to be honest I don't have experience of any other types. Decide what you want, whether it's to turn you on physically (vibrating) or to turn you on mentally and to tone your muscles (ben wa).