I am looking to upgrade an existing spinning reel setup. I currently have a 6'6" St.Croix M rod, and would like to get a new spinning reel. I am looking at the Revo SX spinning, but I am a bit confused by the sizing. If I wanted an SX in a similar size to a Shimano 2500FJ or FH, what would be the equivalent in the Revo? Would it be the SX-40, because they have similar line capacities? Any help is appreciated.