It’s the second day of Amazon’s four-day Prime Day sale, and if you’ve held out on making impulse buys so you can make informed purchases, you’ve come to the right place. We’ve collected the best deals we could find on everything from noise-canceling headphones and robot vacuums to the latest tablets and TVs, the bulk of which have been tried and tested by Verge writers and editors. We put as much confidence in our budget-friendly battery picks as we do the pricier gaming monitors…