Amazon Echo vs. Dot? Show vs. Spot? How to make sense of Amazon's smart speakers

USA Today's Jefferson Graham suggests tips on the best way to shop through Amazon's home assistant, Alexa. LOS ANGELES -- With seven different choices in its Amazon Echo family, consumers are naturally confused about which smart speaker, if any, to buy. The entry-level Dot is the most affordable and Amazon's best seller, but has the worst sound. The video versions of Echo haven't caught on, but are now costing about the same as the regular, full-featured Echo. USA TODAY is here to help, with a guide to all seven speakers, pros and cons on each, and a summation at the end. Amazon's Monday/Tuesday Prime Day sale is expected to have the best deals on Amazon's own products, with especially good discounts on the Echo speakers.