I'm planning to build a new Bulldozer comp and I figured I'd try watercooling. I figured I get the Swiftech 655 pump and XSPC RX 480 rad, but I'm not sure about the waterblock. This block, the XSPC Raystorm got rave reviews on some other sites. Whatcha think?
Raystorm seems to be a decent block according to the couple of reviews I've seen on it...a little higher flowing that the Rasa block if I recall.
According to Martin's review, it performs about 1C better than the EK block, but is cheaper ($62.99) than the Acetal ($71.95) and Copper or Nickel ($82.95) versions of the Supreme HF, as well as the Apogee XT ($79.99) on FrozenCPU. It basically ties with the Koolance CPU-370, but is ~$20 cheaper ($87.99).
It also has an LED, which is pretty nifty and is a nice option.