Is carbon fiber really worth it

[TreyA123]

I’m debating adding a carbon fiber hood and trunk to my gs300. Possibly more if it really works. However after a bit of digging I’ve seen a mixed basket of opinions. Some saying their carbon fiber was heavier, not lighter and others saying it’s great. I’m not planning on everything becoming carbon fiber but like as I said above hood and trunk just to start. Do any of you have trusted brands you know work? Or sellers on eBay? Thanks!