As with most slow or moderate action rods, its hard for me to find a better match than Cortland 444 Peach. I've tried it in both WF & DT for 3-6wt, and for 2wt in DT only as there is no WF in 2wt. Its worth a look. Also, some swear by Sage's Quiet Taper Lines. They claim to be designed to maximize the performance of all moderate action rods.

Jake