I am no expert and as you are all well aware new to ship modelling. I have the Trumpeter Hood started and the Tamiya Musashi which I received for free. Maybe this is not one of the better Tamiya kits but so for my thoughts are as follows:
I find the Tamiya kit plastic very hard, fit is not that great, less parts then Trumpeter, more filling and sanding etc. Trumpeter kits yes they have more parts, but I love the soft plastic, easy to cut, glue, sand and much less filling/sanding. I find the fit of the parts to be excellent and the detail is IMO blows Tamiya away. Maybe the Tamiya POW, KGV, New Jersey may be better kits then the Musashi. Don't get me wrong I don't want to offend any Tamiya lovers, but as years move on and tech/molds get better it is hard to compare to the older kits.
I am not talking accuracy, like I stated I am new to ship modelling but so far I would rather buy the and build the Trumpeter kits over the aged Tamiya kits. I believe if Tamiya was to make new molds today and release new ship kits they would probably be very good. Only sad thing for me is I would love to build ships like New Jersey, POW, KGV, Bismark and I do wish Trumpeter also offered current 1/350 kits of these famous ships.