Give some thought as to why you are going to use water cooling.
I would hazard a guess, given the acrylic case, that you are looking for something that's first visually interesting and things like noise reduction and overclocking are somewhat secondary. If this is the case, you might want to look at some of the PolarFlo blocks (and trust someone else's opinion as I'm a bit "bling-impaired").
If I've guessed wrong (and I often do) you might be looking for quiet or overclocking - this is a particularly good place to be looking for that kind of info. If you're particularly looking for watercooling-for-quiet you might also try the watercooling forum at SPCR, although this forum's focus has broadened over the last year to include quiet/silence.
Hope this helps - and welcome here!
Bob
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