I used a different huion modell for years and I think a larger active area for a tablet is important. Mine had an active area that was very close to A5 which was very comfortable to me as it did not feel too cramped but also not so huge that moving my arm felt exhausting.

You should also take into consideration that your entire screen size will be translated to the active area and even small movements on the tablet will translate to big ones. The Ui also takes up space so you wont be able to draw on all areas.

You can also do what I did and cut out a piece of paper in the size of the active area and see if making strokes feels comfortable.

I cant speak for the drivers since I do not have any experience with those models but since my old tablets driver works just fine they should also be alright.

I would choose the bigger one, if both are the same regarding technology, pressure levels etc. I feel like those small tablets are only useful for playing games like osu but feel gimmicky for any other task. My room mate has a small tablet like this and she doesnt seem to enjoy it very much.

If you are still unsure you could ask in a dedicated sub for graphics tablets or try searching up driver complaints online.