thanks guys. i decided to buy a couple of the happy baby ones, because of the price and safety. found that some come with a sterilising pod that you put in the microwave. pretty cool. with my other DD it took about 4 months for her to get the hang of the dummy, she eventually took the orthodontic heinz baby basics one but they were very expensive and stopped making them in that shape eventually. there seems to be more cherry style ones around so gonna give that a go.

thanks again everyone.