On a 3/8, my absolute favorite is a #4 Hildebrandt willow for the big blade and a #3 silver willow or colorado for the small blade. Same blade on the 1/2 because the Hildebrandt has so much vibration, but I will use a #3.5 for the smaller blade.
As far as Colorados go I use a #5 gold on both the 3/8 and a 1/2. I retrieve the Colorado bait slow, hitting cover. The willow should be retrieved fast in clear water but can also be used very effectively in stained water with all different types of retrieves.
Nothing but Sampo Ball Bearing swivels.