What works, does not need continuous software updates.
A plus for the Shearwater HUD (never tried it, but definitely a plus) relative to HW products (lots of bugs especially the OSTC 2N, but well supported and cared for).
The thing though one thing is bugs on a dive computer (tables, tables, tables) and another is pPO2 Monitor life-support devices with bugs or which do not work at all.
Two different level of risks and possible outcomes entirely (switch to backup tables vs. switch into the afterlife).
I do have strong feeling on the subject of those who put divers' lives at risk with non-performing life-support products (my life in particular).