Do you have any idea of roughly what kind of gradients the Oceanic/Aeris run in their Z+ alg?
I do not, I just know it's "more conservative" and I have always been comfortable using DSAT on my Atom.
FWIW, I now pretty much only dive tech computers and use them set to GF 50/80. But, that is partly because I am now trained and certified for deco diving. As such, if I'm out on a recreational charter, I will stay down as long as the NDL on my Atom (i.e. as long as ROUGHLY GF 95/95 would allow), but then do the stops dictated by my tech computer on the way up.
If I were not certified for deco, then I would still be just using my Atom on DSAT and doing a minimum of 5 minutes at the safety stop for any dive deeper than 80 or so feet (if I was down anywhere close to the NDL). I don't have any science to back that up. It just seems like a reasonable precaution, if I have the gas to do it, after doing a deep dive to the NDL of a computer with an algorithm that is known to be very liberal. I like to maximize my bottom time, but there is no reason whatsoever to skimp on safety stop hang time.
Likewise, if I were not certified for deco, but using a computer with GF, I would probably set it for something like GF 75/95, or maybe GF 80/90, and stay down to the NDL, but then do at least 5 minutes at the safety stop (for deeper dives, near the NDL).
All that said, as with anything in scuba, I would start with any computer by being conservative (i.e. not push it to its NDL) and gradually work my way up to using its more aggressive settings and staying down to the NDL.
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