I bought a Petrel 2 largely because I felt like I was tired of waiting for the H3 AI to come out. After I had it, I eventually realized that I liked the H3 better because of the size and if they had never said anything about AI, it is still what I would prefer. I let the announcement about AI and the fact that it wasn't released yet actually put me off of buying the H3.
One of the guys on the boat this past weekend had a Perdix. I got to put them both on my arm side by side. The Perdix is smaller than the Petrel 2, but it's still big and bulky - way bigger than the H3. To me, it only looks small and compact next to a Petrel. If the AI never comes out for the H3, I am still glad to have it over even the Perdix.
At some point, when I am feeling flush with cash, I would like to get a second tech computer, so I can do tech dives with computer redundancy. And I would definitely prefer to have non-identical computes, so I can avoid even the possibility of a bug or defect affecting both simultaneously. Hopefully, by the time I'm feeling spendy on that there will be an alternative to the H3 that is not as big as the Perdix.