I much prefer electric fans, for several reasons. One, they do a better job of cooling when the car is idling in traffic, because their speed is not dependent on engine RPM. Two, electric fans can be activated with the engine off to reduce heat soak. Plus, they generally provide more clearance in front of the engine, and allow a thicker radiator. Yes, there is a small loss in mechanical parasitic drag, but it's somewhat taken up by the additional load on the alternator.
If you go electric, you do not need a fan clutch, just a pulley.
