6m we gave him the Dr Brown sippy. He did really well with it. By 9m he was almost solely using the Munchkin click lock straw cups, but they leaked a lot and the straws got moldy no matter what. Now he uses the OXO straw cups, and I wish we had started with them.

A Nuk sippy cup. She was about 6 or 7 months

@mrslasyone my boys were around 6 months and they loved it. They got off the bottle no problem and I used the Nuk silicone nipple one