Deal of the Day This is the one thing on sale (out of many things on sale we write about) you should buy today. Read more here . Photo-Illustration: The Strategist; Photo: Retailer It’s pretty common knowledge that Vitamix reigns supreme in the blender universe. I always tell people that the brand’s machines are well worth the investment at full price — though if you can nab one on sale, all the better. The tried-and-true 5200 has been on the market for nearly two decades, a testament to how