anyone know the difference

Does anyone know the difference between:

similac sensitive vs similac total care 360 sensitive or Enfamil gentle ease

My LO has been on total care 360 sensitive ready to feed bottles (she is 8 weeks). We got WIC now where we can get free cans of formula per month but only powder. TEMPORARILY we can get the similac sensitive. Before we have to get on Enfamil gentle ease -who is contracted with them- I hate having to switch her so much. Any advice?!