I am building a computer and right now I'm looking at the Asus P5n3-3 SLI Plus Motherboard... What I need to know is which would be the best Hard drive to buy? I am looking for at leat 250 GB maybe 4 or 5 hundred GB. I am just confusedd because on TigerDirect it says that it works with Serial ATA but down at the bottom it says UDMA/33 or UDMA/66 or UDMA/100 or UDMA/133.