I am a pleased Mares Smart DC owner. Mares has the most liberal RGBM algorithm on a DC that I know of, but it is still going to be slightly more conservative than the PZ+. Both are excellent choices for cold-water diving or deep rec dives. DSAT is specifically designed for repetitive warm-water diving.
I understand the Mares to have slightly higher quality construction than the Oceanic. If you have problems, though, I understand Mares can be a pain to get warranty work done with. Ultimately, though, they are very very close.
I would suggest matching the algorithm to the diving you do. DSAT in particular is designed to do one type of diving well, and will punish others. Having the choice is very nice. But unless I was doing that type of diving, I would just buy whichever one was on sale - which I did, and it was the Mares. gl
Got any links to support the bolded parts?
As for Mares RGBM conservatism, y'all are saying pretty much the same thing. It's more conservative than PZ+, which is a fair bit more conservative than DSAT.
Atomic RGBM and Suunto Eon Steel and Eon Core are both way more liberal than the Mares. Just because you haven't seen people using either doesn't mean there aren't plenty of them out there.
Lastly, if you want to be more conservative than what DSAT will allow, you don't HAVE to buy a more conservative computer. You CAN just bump up the Conservatism setting, or change to using PZ+. Then, you will still have the option to go more liberal if and when you want to. Not so with the Mares or Cressi.