Echo Pop vs Echo Dot: Both Alexa speakers are on sale, but which should you choose?

Amazon's most affordable smart speakers share many similarities, including the Alexa virtual assistant, but what are the biggest differences between these two models?

Echo Pop vs Echo Dot: Both Alexa speakers are on sale, but which should you choose?
Amazon's most affordable smart speakers share many similarities, including the Alexa virtual assistant, but what are the biggest differences between these two models?