If you are looking at beauty, the NZXT Aer would be the better ones out there.
Value for money would be thermaltake riing fan.
Something slightly more performance would be the corsair ML series. But they dont come cheap.
Both the thermaltake and the aer dont seems to be static pressure optimized. Blades are all quite wide apart.
Things to note. When buying fans, do not just see the back package and assume the manufacturers claim performance. Cause it will never be true unless proven.