Save 44%: The Soundcore Sleep A20 earbuds are on sale for just $99.99 as a Best Buy deal of the day. That means come May 12, this $80 markdown on the usually $179.99 earbuds is over. $99.99 at Best Buy $179.99 Save $80.00 I do not play about my sleep, which is one of the reasons why as a headphones reviewer, I have put all the most popular sleep earbuds to the test. After a few rounds of testing, the Soundcore Sleep A20 earbuds remain some of the best I've tried, and as of May 11, they're on sale for one of their lowest prices ever. Thanks to a Best Buy deal of the day, they dropped down to $99.99, making them $80 cheaper than their usual $179.99. As a deal of the day, however, these savings will be gone come tomorrow, so if you're interested, you'll want to act sooner rather than later.…