What is the best sippy cup to train a child who doesn't want anything but a bottle?

I have tried to get my daughter to start drinking out of a sippy cup. I have bought four different kinds of sippy cups thinking that I would find one that she would like, but she still will only take a bottle. I think it is because she can't figure out that she needs to suck on the spout so I tried taking the insert out so that the liquid can flow freely and she still wont take the cup. I have tried different types of lids. I obviously haven't found the right one. I have tried a nubby, advent and gurber graduate kinds of sippy cups. can anyone suggest one that might work?