The bristles are slightly longer on the EDM.
I think the F80 is great, based on first impressions. If you don't have the EDM one, I would suggest getting this one for sure. It did not smell funky or anything when I got it, and it's very soft. It met my expectations for sure. My EDM has never shed and I have been able to pull out some of the hairs off the F80 already, and that was before washing it or using it... so maybe a sign of things to come.
Do you have this brush? What do you think of it?