That kit is better, but not 50% better.
If you're serious about getting things as quiet as possible, the PA 120.2 and the variable speed pump are a big help, but the Swiftech rad in the cheaper kit is no slouch.
__________________ QX9650 @ 4.038GHz (425x9.5) | Asus Formula Maximus | GTX280 (777/1620/1404) | Mushkin XP2-8000 Redline 2x2GB
Q6600 @ 3.6GHz (400x9) | MSI P35 Platinum | 8800GTS 640MB (700/900) | Mushkin EM2-6400 2x2GB
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