I still plan to get the mini, but I went to my local apple store today and I held the 12 and 12 Pro, and I gotta tell you, that 12 is super tempting. They had it lined up 11 - 12 - 12 Pro, and wow, the 12 feels so much lighter than the Pro and so much easier to hold than the 11. With the flat sides, it feels bigger in the hand than my iPhone 7 4.7".
I know it's only 25g lighter than the pro but to me the feel was immediately noticeable, both in my hand and pocket. If I were to reconsider the mini, I absolutely would get the regular 12 and not the pro.