What fan would be good for the Volcano 9+?

[slickg]

I have a Volcano 9+, but I didn't get the original Smart fan. What fan would you suggest that I run on it to get good cooling? Thanks!

 

[Gravity]

I'd try a panaflo L1a but that's because I like silence. For better cooling you might try a tornado. 55cfm or so but 45db I think.