Which Aux Fan is Better?

[markseven]

I have the option to install either of these:

Bosch (German made) 5 blade with metal shroud - weighs 6.4lbs - I believe it was made in 1987
PowerMotion (Canadian made) 7 blade with plastic shroud - weighs 5.0lbs - made in 1990

Which should I use? Why?

[rs4pro3]

One that has curved blades will be quieter, which is probably the 7-blade one

[winfred]

i like the bosch a little better then the power motion, i think it moves a little more air and when in good shape it makes about the same noise (not worn out with bad bearings) which is practically silent compared to modern bmw air raid siren's, id be pissed if someone tried to sell me a new car with a fan as noisy as a e39/38/46

but either fan will work ok

[markseven]

Thanks guys - I just finished installing the PowerMotion. It's lighter, quieter, newer, and according to my Dad, will move more air...