I have the DPT-S1 and it's was a great device to use as a student when I had to read tons and tons of papers. I could mark up the papers all I want and not lose

I have the DPT-S1 and it's was a great device to use as a student when I had to read tons and tons of papers. I could mark up the papers all I want and not lose my papers (which I used to do all the time). Though the pen is pretty frustrating to use (because of the lag) and the device is super slow at loading, it was bearable enough that I would use it all the time. Now that I don't have to read pdfs all that much, I don't use it much. But I really want a device like that except it's fast, has a nice pen, has high dpi, and you can browse the web with it. Well..I guess basically I'm thinking of a tablet except eink.