Thanks for the replies everyone, though it seems like ya'll are getting in a cat fight about who's know the most. Chill out. I simply asked for a recommendation on a computer between the Mares and the Oceanic.
Mareses are the cheapest at the moment. Oceanics are the only ones with DSAT and it's not entirely clear how long that's going to last: every new PPS computer is PZ+ only and who knows what the relationship between Huish, Pelagic Pressure Systems, and the rest of them will be the day after tomorrow.