I'm on a WindowsXP desktop right now. I'm planning to get the 15" 2.33GHz MacBook Pro, w/ 160GB hard drive. I don't know why they don't offer the 7200rpm hard d

I'm on a WindowsXP desktop right now. I'm planning to get the 15" 2.33GHz MacBook Pro, w/ 160GB hard drive. I don't know why they don't offer the 7200rpm hard drives. Won't the 5400 be noticeable slow?