Agreed! CEE is top notch, quality, provides a CoA. That would be better than the overpriced Cellmass which is just CEE with flavoring.
SizeOn however is different, it contains a carb design along with a different form of creatine and extra goodies. I don't think it's even in the league with CEE, as it is more advanced and therefor more expensive. But you will nonetheless see results with CEE.