yah, i would go with sata, its much better, and if youre going to build a whole new system, get the msi 865pe or 875p neo(2) fis2r (its neo on the 875 and neo2 on the 865) they both have 4 sata channels, 2 of which can be run in raid
Buy the Fall 2003 Maximum PC (Build The Perfect PC). It answers all your questions and more. Makes me want to build a new computer even though nothing is wrong with mine.