9ft 5wt 4-piece Grays GR30; I've thought about getting a 3WT, but haven't yet. I just use my refular rod as a 4-piece is plenty packable
For Spin Fishing:
Brookies and other small Trout:
Daiwa Spinmatic UL Travel Rod (4-piece) 6'
Pflueger President 25 with 4lb mono
Large Browns and Bows:
Eagle Claw Pack-it Spin 6'6" 4-piece medium
Pflueger President 30 or 35 with 8lb mono
I bring cheap rods because tubes to protect rods are heavy. I figured out that just getting cheap rods and replacing them as they get busted up is more economical and lighter.