If I had to pick one tablet to watch video on for the rest of my life, I would pick the Samsung Galaxy Tab S3.
It’s a stylish, all-glass tablet with an impressively crisp and vibrant screen and four speakers, making it an excellent portable movie theater. It’s also the first HDR-ready tablet, although there are a few asterisks to that bullet point. (HDR stands for high dynamic range, which means a spectacular, noticeable difference in contrast and color range in comparison to regular HD.)