I'm buying parts for my first WC setup really soon, and I'm not sure which waterblock to buy. The problem is that I have a cheap mobo with no mounting holes. So, I'm basically stuck between choosing a MCW5002 or a RBX with a socket hold-down. I'm going to be using a Via 1300 pump and a Chevette heater core. I've seen reviews that show the RBX as better than the 5002, but only with a high-powered pump. Which would perform best with the Via?