I disagree on CCR, I think a recreational photographer could benefit from a rebreather.One your big points is the ability to adjust gradient factors. Most computers nowadays have that feature in them allowing the diver to be more or less conservative if they wish.
Price wise the perdix is comparable with other computers in the size, color screen, AI etc.
In short bad example. The only piece of gear I would consider tech only is a CCR, but I'm sure others will disagree with me on that point.