I had a 2000 Pop-up that had surge brakes and the actuator was bad I priced out elect brakes over a new actuator. Cost was very close. But that was not taking into the cost of a brake controller. I have towed with both surge and electric brakes My opinion is go with the electric's You will have better control over how the brakes work than you will have with surge brakes.
If you do go with electric they are easy to install as long as the mounting flange is already on the axel If not than one would be needed to be installed
Also consider that if you ever decide to go to a larger trailer that has electric brakes you will have the controller
2004 Jay Feather 25E
2001 Ford Expedition 4X4 EB 5.4 3.55 rear
2004 Ford Expedition 4X4 EB 5.4 3.73 rear