While the overall physical retail market has struggled, consumer-electronics sales have been booming, and you can largely thank Amazon.com (NASDAQ:AMZN) for that. The online giant, which passed Wal-Mart as the No. 2 electronics retailer in 2016, was expected to pass Best Buy (NYSE:BBY) for the top spot, according to Quartz. To put Amazon's impact into perspective, the company accounted for 90% of the $5.6 billion growth the consumer-electronics industry in 2015, according to an analyst note from Deutsche Bank sent in June 2016. Amazon is absolutely a must-buy in this space, but so are Best Buy and Apple (NASDAQ:AAPL). Best Buy is kind of the last man standing when it comes to traditional electronis retailers on a national level.