So I hit 40. And for my 40s birthday I have invested in a drawing tablet. A Huion 19 pro. My dream was a 24inch, but from what I have heard from people who has that, it's to big. I have had a 16 inch, but that just felt like a ipad pro (which I have) with extended wings and lesser resolution. Now, this is 4k and about 110% more space then my 12,9 inch iPad pro, and way better pens. I have got draw some drawings on it now and I am very happy with the choice. Not at all disappointed that I did not go for the 24 inch. This thing weighs only 2 kg and I can bring it along. And even though it can't be connected with only one cable, it can charge the mac it is connected to, so only one powerbrick/socket is needed- so it feels like just on cable connected.
Will I be more productive? Unsure, but it feel much more natural to sketch on a tablet then an iPad , so maybe it will be easier to get my sketch done on device. I did sketch on my ipad, but never felt I got it right.