You can also go with Corsair ML120 series,
link: http://www.corsair.com/en/cooling/ml-series-fans?fansize=120mm%20x%2025mm|
ML series fans are good in AF and SP, though they are pricey due to the mag-lev bearing. But they are also very quiet and last a long time.
You can also choose suitable LED color for eyecandy if you like.