As has already been mentioned, a lot depends on your location as well. In OK right now it's 101 degrees outside and the FAL BM 150 I was using couldn't keep the A/C cool enough for me, even rated at 2800 CFM. The car, on the other hand, would oscillate between 185 to 175 degrees with the thermostat cycling. But I also have an aftermarket "true" water temp gauge, not the stock "trend indicator" along with the Fluidyne Al radiator. The car would stay cool just fine with a 180 thermostat, but I wanted better A/C cooling performance so switched back to the stock clutch fan and shroud.
I have also used the Tundra fan clutch, but beware that it locks up a lot and while it pulls SERIOUS air, it also creates drag. Many people have said that using e-fans frees up a lot of horsepower, but I drove my car home with the electric fan, put on the stock clutch fan and drove to dinner and didn't notice any huge difference.
People like what they like, but there are a lot of variables involved...