Macworld If you’re looking for a new smartwatch, the Apple Watch Series 9 is the best of the best, with a gorgeous design, an incredible array of sensors, and the best display in the business. But it’s even better when you can get one for this cheap: Amazon is selling the 41mm Apple Watch Series 9 and 45mm Apple Watch Series 9 for $299 and $329, respectively, a savings of $100 and 25 percent off the MSRP. The Apple Watch Series 9 has either a 41mm or 45mm display with two exclusive features: an S9 chip that’s faster and smarter with a new four-core Neural Engine, and the new double-tap gesture…