Which fan are you a "fan" of?

I use a plastic flex fan with an ebay 26in aluminium rad. I've only driven the car briefly on the street (35 miles) with traffic etc and although the ambient temp was only 65-70 I was sitting on 160 in traffic and about 175 on open road. This is with 12:1 iron headed, solid roller engine..
It will be a test when it gets warmer (winter now in OZ).