I really like the convenience of the installation from the /e/OS updater and a USB stick (on the contrary, I despised the first /e/OS installation from Android 8…), therefore I would be pleased to continue with that, but I would like to be sure that there is nothing left from the previous user …
You are right, I am always asking because I am unsure what to do, and afraid of having to start from scratch … due to my poor practice, I cannot still forget the first installation, that was a pain to me … I was pretty happy when you suggested the “dirty upgrade” in the past , as I could easily perform it.
Regarding the two options, I feel more comfortable with the second method you mentioned, since I can proceed with my usual process of updating from a USB stick, after erasing all the data as you said. If there are no difference between the two methods, I will go for the second (as soon as I get hold of the XA2).