I have one of the G-Rod trout spinning rods. It loads up and casts very well, superior workmanship, one of the best I have in that strength, about a medium light as I recall without going and looking. It feels great.
Graphene is for real, not some sort of fad, so adding it to rods is likely going to become more and more popular over time. A fabric matrix one carbon atom thick is going to be hard to beat as I believe it has the greatest strength to weight ratio of any such thing.
My understanding is the new less expensive models are essentially the same rods as the more expensive ones, just less expensive components.