The gentleman who imports the Yacht Master also has one of the best *modern* Submariners .. as far as Day-Date Presi .. there is not a Modder who currently "up-specs" these watches; you have to buy what the Dealers have. That's not to say that what they carry is crap .. it's just not "ultimate" territory.
I don't follow "modern" Submariner designs, so I can't link TC's ultimate Sub for you .. Im sure many other people here can, tho ... and hey .. if you want something high-dollar and special, why not a Paul Newman chronograph?? There are great examples from custom builders.