I'm going to offer a vote against the CPU-340. I have that block myself, and I'm honestly not impressed with it. Weak design, mediocre performance. If you really like the looks, fine, but you might find your processor running a few degrees hotter than with a newer waterblock.
__________________ i7 2600K | ASUS Maximus IV GENE-Z | GTX Titan | Corsair DDR3-2133
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