@neilnevill – just had a look at the sla039j1, and it’s a Prospex, and way out of my budget; I’d certainly consider a SBDX017, it’s identical, just a later edition AFAIK. I’m not interested in a quartz movement, I just prefer mechanical movements, but with an MM300 there’s battery replacement to consider, when the movement has to be removed after the crystal taken out, to get at the battery because it’s a monobloc case.
In any case, it’s entirely down to how much money I can reasonably afford to spend once all my pensions have paid up, and I can start looking around the various second-hand (badoom, tish) market places. 😁
We’ll see, I’ve liked the look of the MM300 for ages, particularly because of the design of the handset, I really don’t like hands with arrowheads, it’s an aesthetic thing with me, and also the MM300 gets a higher standard of case finishing, zaratsu(?), along with what is effectively a Grand Seiko calibre, which is appealing as well.
Seiko have recently issued a new so-called Marine Master, but it’s a different beast, not as well specced, and really overpriced for the quality of movement and finish – sadly Seiko are moving that way across most of their watches.