Define better .... do you mean quieter or better thermal performance ?
Problem is radiator performance is proportional to fan speed.... pretty much if you are going to reduce fan speed, you reduce thermal performance.
Biggest mistake people make with these CLCs is they install them upside down. Yes, we all learned in 8th grade earth science that "hot air rises" .... but not in the presence of a fan. Ever sit under a ceiling fan ?
Make sure that all your radiator fans are sucking in outside the case air and blowing in ..... not only will the cooler air cool better, you will improve overall case air flow which, with top fans blowing out:
1. You are likely sucking air and dust in the the rear grille.
2. Along with the dust, you are likely sucking in exhaust from your GFX card(s)
Adding a 2nd set of fans in push / pull will improve performance by 10 - 30%.
Phanteks took the CPU cooling market by storm with the PH-TC14-PE air cooler which beats most 2400mm CLCs. Their 1st case (Enthoo Primo) won case of the year in 2013 at Computex and their 2nd case (Enthoo Pro) took the award in 2014.
The success of both is due in large part to the fans.
As far as the Corsair's and others, did you look at the links ? Ranked from 1st to last
Phanteks PH-F140HP/TS
Noctua NF-A14 FLX
Noctua NF-A15 PWM
Noiseblocker B12-2
Noctua NF-P14 FLX
Scythe Gentle Typhoon 120-12
Noiseblocker M12-S1
Corsair AF120 Quiet
Corsair AF120 Performance
Thermalright TR-TY150
Scythe Gentle Typhoon 120-14
Xigmatek XAF-F1453
Nexus Real Silent
Xigmatek XLF-F1453
Noiseblocker B12-PS
Corsair SP120 Quiet
be quiet! Silent Wings 2
Noiseblocker M12-S2
Antec TrueQuiet 120
Noiseblocker M12-P
GELID Wing 12
Antec TrueQuiet 120 Pro
Antec TwoCool 120
SilverStone AP123