I don't know if it's a hot take but I really liked the Sector Five and Digital Sea arcs. It reminded me a little of the Digimon movie and it stuck with me, giving the Internet an ethereal and magical vibe since we didn't have Internet at home at the time
Also the Siberian research facility really stuck with me for some reason
I refuse to rewatch this show, don't wanna even risk ruining the nostalgia around it