If I lost my PDC (which is a wristwatch-style with AI), I would buy an Oceanic Atom 3.0 or 3.1 in a heartbeat. That is what I have now and I love it. I change the batteries myself. The AI has been 100% reliable. It was way less expensive than the wristwatch w/AI options you're looking at. I'm 49 and have gauge reader lenses in my masks and I don't have any trouble reading it, even in low viz.
I also have a Petrel 2, but, where I always dive with the Atom, I only dive with the Petrel when I need to. I don't like anything big/bulky on my arms. Thus, I don't think I'd like some of the options you're looking at, for the same reason.
The SeaBear H3 looks really nice, except for the non-user replaceable battery. Regardless, I think I would not buy one of those until they actually fulfill their promise to release AI for it, and see what the pricing on that is.