What's the best sippy for formula?

Me

My almost month old has downright refused formula from any sippy except the dr brown sippy bottle, and even that one I have to fight to get her to drink it. We currently have 2 360 cups, a munchkin soft spout cup, and a nuby learner cup. She will drink water from all of them but turns her nose up at formula unless its in the bottle. Please help, I'm trying to kick the bottle before she turns 1 in July.