zoom ductile iron flywheel vs replacement cast iron

First of all let me say that i normally find all my answers by searching, but this time i swear this particular question was not answered.

it is this: Is the zoom ductile iron replacent flywheel better than the ford factory replacement cast iron one?

The zoom is listed at 85 at summit. 15 dollars won't break the bank, but i would like to know what you guys recomend.

thanks in advance for your time.

thank you

thanks for your input. has anyone heard/used the brothers performance billet steel flywheel? it's only $100 and available in both unbalances.