I'd rather have to roll around in cellulose than fiberglass, but I try and avoid both. put it in my parents house, my house(above the remodelled part) and my garage. Works great.
Works great and is cheap, but my interactions with it aren’t on the install side. Fucking heavy too, I’ve seen it pop drywall screw on 24” OC ceilings. Oh, and whatever you do, keep your roof intact. That shit gets wet from a leak and you’ve got a disgusting mess to deal with.