What are your favorite fly lines in 4, 5, and 6 wt?

Mine depend on the rod (in priority), and all lines are loaded on separate spools spread over four reels, although that may change as I zero in more on which lines get used the most in the future.

4 wt - Fast action rod = SA Mastery GPX WF4F (actually 4.5 weight) & Airflo Super-Dri Xceed WF4F
4 wt - Medium Fast rod = Rio Gold WF4F, Tenny/Lefty Kreh WF4F, SA Mastery Nymph WF4F
5 wt - Medium Fast rod = Cabelas Prestige Premier WF5F (actually 5.5), SA Supra WF5F, SA Mastery DT5F
6 wt - Medium Fast rod = SA Sharkwave GPX WF6F (actually 6.5), Cortland 444 Sink WF4F/S, Orvis Wonderline Gen III DT6F

Only time will tell how much testing I get to give these choices, but that's my present lineup.

What say ye?