IMO, I think this question is being phrased incorrectly. Maybe the better question to ask is “what dive computer is right for ME?”
If you ask what the best computer ‘on the market’ on SBoard, you’re going to get a LOT of opinions, many based on the users’ experience. Sure the Perdix is VERY well reviewed and owners LOVE them. It’s also $900 to plonk down on a computer. That’s a big investment IMO, for a diver just setting out and figuring out what they like. But if you used it once, and fell in love, it’s a no-brained.
I’ve now been diving 4 years, and I have a simple Cressi Leonardo I bought off Amazon that I modded with bungee straps instead of the standard band. “What a crap computer!” is the normal response I get. No it doesn’t have a profile playback, it doesn’t have bells and whistles, and it’s way too sensitive on my ascents. But it handles all my air and nitrox% and calcs, gives me depth and temp, times my surface interval and no-fly times, and gives me a dive history. I’m a Caribbean and warm&clear water clear princess diver and don’t need much more. And it’s $200 so if it DOES get broken or stolen, I just order a new one without grousing.