PC World: Samsung is on a roll with its new "Series X" line of laptops. The Series 9 is a high-price, high-style ultraportable that provides real competition for the Macbook Air. The Series 5 was the first Google Chromebook to go on sale, and while we're not fans of Chrome OS and don't recommend it, it's a nice piece of hardware and an aggressive release by Samsung. Now, the Series 3 rounds out the line with a nice everyday laptop for everyone. It's highly portable, performs well, and the price is right at just $750.