The Terrova can turn continuously and wrap your chord around like a candy cane so the internal US2 is the only way to go IMO.

The used market for each type of troller is an excellent suggestion especially if you can find one from one of our guys here in the Swap/Section.

If your not pullin cranks then I would avoid that notion all together. Take if from DonDon it can wreck your pocketbook if you mess around and get hooked. First it cost him a perfectly good Fish & Ski rig and his Big Feets peek-a-boo glasses are on the line for some of those fancy smancy electronics with side imaging. Oh God where will it end?