mrkool,
ridge vents work from stackeffect, just lke a chimney and use no
electricity. They have no motors to go bad and basically no
maintenance. Electric fans pull the attic into a negative pressure
with respect to the house. If there are any openings in the ceiling,
conditioned air is drawn out of the house to help cool the attic. Then
air is drawn into thw house tfrom outside to replace the air that was
drawn into the attic.

Big holes in the ceiling are can lights, chandeliers (there is a
opening around the electrical junction box above the escutcheon),
ceiling fans, Kitchen cabinet bulkheads, Bulkheads in bathrooms, around
wires coming up through walls, around pipes coming up through walls,
bathroom exhaust fans, leaks areoun ceiling grille boots, etc.

I would go with the ridge vents, less problems in the long run, fewer
side effects and no electricity costs.

Stretch