I use a Boox eink tablet, which supports epub, mobi and pdf quite well. The large size makes pdfs useful. Because of this support I can download directly from

I use a Boox eink tablet, which supports epub, mobi and pdf quite well. The large size makes pdfs useful. Because of this support I can download directly from libgen without converting or using a different device. For books that are only available through Amazon, I have the Kindle app installed.