The choice between these two excellent melodicas is a familiar topic here, Elizabeth! It’s hard to go wrong with either one, and experienced players here don’t tend as a group to rally around one as opposed to the other. Two thoughts, though: (1) Not everybody thinks that the best (or even a good) way to hold a melodica is by the hand strap. I never use the handle. (2) A 32 key model (the M-32C or P-32D) is narrower, lighter, and easier to hold and balance in the left hand.