my friend. The Seiko just feels great on the wrist. The 600M and 1000M Tuna's are great but I never really wear mine out of the house as on my wrist at least the comfort isn't great.
I wish you luck in the hunt for the 7C46 movement and if I can help in any way I will. I bought my 7C46-6009 a few months back from this very forum. Looking at the one on ebay now , prices seem to be going crazy on these not that I want to sell mine