Amazon is the undisputed champion of the ereader market, and its cheapest Kindle model is one of the best-selling ebook readers on the planet. The 2016 model is the eighth generation of Amazon's entry-level Kindle. We gave the 2014 seventh-generation Kindle a positive review, and this latest version sees the design revised once more, and some new features added.The 2016 Kindle costs £59/US$79 (about AU$105) with adverts on the lock screen, or £69/US$99 (about AU$130) if you don't want to see any adverts.There are more exciting, bell and whistle-packed ereaders out there, such as Amazon's Kindle Oasis or Kindle Voyage; however, the basic Kindle has long been the go-to device if you're looking for a straightforward reading experience without spending much money.But is the original ereader still the best basic option out there? If you have the 2014 model, is it worth upgrading? And, given that you can still buy the 2014 Kindle for £10 or $10 less at the time of writing, is it worth shelling out the extra for a new look and some extra features?