There is no significant difference in taste between ball-shaped corn and butterfly-shaped corn; their main differences are in their shapes and the process of making them.

Sphere corn is produced using ball-shaped popping corn, while butterfly corn is produced using butterfly-shaped popping corn. Although these two types of corn are different in shape, they are made using essentially the same process of placing the kernels in a sealed bag and then heating and pressurizing the kernels to evaporate the water in the kernels and create steam. When the pressure of the steam reaches a certain level, the kernels suddenly burst open and turn into the popcorn we usually see.

So there is no difference in flavor between spherical corn and butterfly corn, but there are differences in shape and the process of making it.