Without further adieu, results

OPEN AIR
CFM vs. dB

Low speed fans (<60CFM at 12V) in open air:


Medium speed fans (60CFM to 87CFM at 12V) in open air:


High speed fans (>87CFM at 12V) in open air:


Same sets, with the adjusted dB ratings:




I take the best of each group, and put them on the same 'All Stars' graph for....well.....look at the graphs