I gave up on the stock fans after mine constantly jammed and my coolant hitting the skies splattering out the bonnet
Ended up with mishimoto fans for I think £160 and are perfect. They are loud when sitting still but doesn't bother me.
Since your young keep your Volvo as the daily then the z as the weekend toy.
If I never ran the polo as my daily I wouldn't of been able to afford it due to fuel to be honest.