I recently was looking for a new pc, and since I was at it, I decided to look for stylus capability as well.
One option was the wacom with my existing pc to tide myself over this year.
In the end I decided on a Acer R7 which has active stylus capability.
I don't need the pressure sensitivity so it's 256 levels is plenty for me.
The active stylus with screen isn't the same as the wacom, but I would just chip in on my experience of this 'like' option.
The good :
- can be very precise, since it's like drawing on the photo.
- rather new way to work with brushes in both LR And PS, which in the past was the reserve of more expensive Cintiq tablets.
- ability to paint in adjustments more like real brush compared to a mouse.
The so-so
- only very precise touch up with brushses will make this option bettter than the mouse option.
- the laptop is 15.6", so its good to see, it can be a bit more to move around the hand/arm to get something done. In the past, its just small movements of the mouse within the mouse pad area.
The same will apply for larger tablet vs smaller ones.
As mentioned by others, a larger area will benefit those who do drawing, less so for photo editing.
My few cents.
How it will be useful for your decision.