Fan replacement

[Conaway2]

I’m running an original 2-blade fan and am getting ready to do some touring with our local club. I’m looking for opinions for the best replacement fan. I do have a new cast aluminum fan, as well as a couple more originals that appear to be in excellent condition. I have heard that replacement fans with plastic blades are also available, but don’t know which vendors carry them. Thoughts ??

Thanks - Jim