You're gonna have to atleast try the new Orvis zero gravity rods. The damn things pretty much cast themselves. I casted the 8wt the other day and if felt as light as a 4 weight. Those rods are out of this world...I'm just waiting for the price to come back down to earth!
so far a pretty wide desparity. I am all Orvis but I must say I tried a new rod this summer called Elkhorn. MEt he manufacture and he sold a rod to one of my buddies. They feel great, I just wish they had a better appearance to them.