The biggest (and only real) difference between these two Echos is the fact that the Echo Plus (2nd Gen) has a built-in Zigbee smart hub, which allows it to communicate more easily with more smart home products right out of the box. This increased functionality results in a slightly higher price over the Echo (3rd Gen), but we question whether it's worth the additional money. Amazon has introduced a new Certified for Humans program which promises easier setup and use of smart home devices with its Echo products, so having a built-in smarthome hub is not the selling point it once seemd to be. … [Read more...] about Amazon Echo vs. Dot vs. Show vs. Plus: Which should you buy in 2020?