Jokes aside:
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I use an iPad Pro 10" mostly for my ttrpg PDF reading. I also have an Apple Pencil and I use an app to take notes, write the campaign, manage my character sheet. The pro is overkill for this, and if I was getting an iPad for I would go with a normal iPad, which has an 11" screen on the current model starting at $349 USD for the current model.
If I did not already have an iPad, I would get one of those color eink readers talked about elsewhere in the thread.