My eyesight for reading is excellent so I tend to read with smaller font sizes and find a 6-inch screen ample for my needs. I missed the smaller form factor of the original. It also adheres magnetically but isn't a charging case.

With the new Kindle Oasis, the larger battery is integrated into the device itself and as noted, Amazon has made the case an optional accessory. The original Oasis had a small battery built into the device and a larger one built into the included case, which attached to the e-reader magnetically. , the Kindles utilize a more squarish 4x3 aspect ratio, which is also nice. Compared to the 6-inch display of the original Oasis, which was also 300 ppi resolution, it provides slightly more than 30 percent extra screen real estate. Amazon says it's the largest Kindle display with that level of resolution. When you first see the new Oasis, the thing that jumps out at you is that larger 7-inch, 300 pixel-per-inch (ppi) display.

Kindle Oasis: Comparison and buying advice for Amazon's best e-readers for a complete head-to-head evaluation. Editors' note (M arch 14, 2018): Since this review was originally published, Amazon has released an updated version of the Kindle Paperwhite, which sells for $100 to $130 and includes many of the of Oasis's best features.

Oasis reader