Well for me personally I wasn't doing the pro because it was even larger in size. I couldn't bring myself to pay for the mini 4 since they apparently wont make more of them, so next best thing is the 9.7. However I did look hard at the pro but to me it wasn't worth it for what I needed. I too use my 9.7 as a laptop alternative and have it in a case with a keyboard and I love it, looks like a laptop too, it is WAY WAY WAY faster than my mini 1 ever thought of being and runs FF faster than I have ever experienced.
I watched a ton of videos on benchmark speed testing between the pro and non pro version. The speed difference wasn't really all that much at all for common usage apps. Where the pro did shine was in gaming applications which I don't use. They both can use the apple pen which I might get one day but doubtful. The display I personally cant see much of a difference in (I could tell when scrolling it was more fluid) and if you have one over the other you will never know what you have or missed since you're not seeing them side by side. haha So too me and my needs the pro wasn't worth it the extra coin.
The additional graphics power of the pro translates directly into the snappiness of map scaling in ForeFlight. Well worth the small additional cost for me.