I am interested in buying the 2.8Ghz Mac Pro and then OC'ing it to 3.2Ghz. The ZDNet article says that the quality of your memory is the bottleneck when overclocking. I don't want to buy some cheap-o memory that will flake out when pushed beyond normal capacity. I was going to buy from either OWC or TransInternational, but I don't know who makes their memory or if their memory is good for overclocking. Any ideas?