I talked to a Sage rep about the action of their new ZXL. He told me that the ZXL series is closer in action to the old LL series but not as fast as the med-fast action SLT series. Basically the action is in between the two but more towards the LL series which is moderate action. The blank of the ZXL is similar in color to the old LL series but much lighter since its a generation 5 graphite fly-rod. The XP series was a fast action rod and the SP was a more medium-fast action rod. The XP was replaced by the Z-axis series and TCR series rods. Just giving you what I've been told. Good-luck!