I have not tested the A139 pro, but i dont think it is a upgrade i would do just for the sake of the upgrade.
Sure the A139 PRO are better, but its not like A LOT better, so sure i would do the upgrade if the old camera broke, but not before that.
Of course if moany are no problem, and you can sell / give the old camera to another person, then sure go for it.
I am a dashcam addict, but i only have a pension, and also other hobbies, so while i would love to try a starvis 2 sensor based camera, well i am not buying a A139 PRO camera.