dream poly is a wonderful batt to work with- warm & white is ok too- dream orient, dream bamboo- are 2 more good white choices....read the packages and choose the batting that fits into your (quilting plan) since some need to be quilted closer/denser than others- they shrink at different rates, have different (loft) and care instructions- you need to choose the one that will fit your project.
i love all of the batts from the dream company- the dream poly, orient, bamboo and cotton are all wonderful batts to work with-and create wonderful quilts-