It is not just the current crop of watches as some of the vintage Seikos are superb.
The Seiko 6139 /6138 automatic chronograph was produced in 1969 have a cult following. Arguments /debate clearly focus on the calibre 11/El Primero story but the 6139 was in the mix. The Japanese modern production methods were starting to challenge the Swiss and the quality of these watches/movements is very good.
Price wise these pieces can be picked up for a fraction of the cost of the Swiss but are starting to rise for original pieces. Lots of horrible franken watches around so as usual research is key but there are some good sources of info available.
Seikos from this era also have their own space watch "The Pogue " plus the same era produced a lot of nice Seiko Dive watches
I agree with the OP that these are not replacements for the classic brands but they can provide a heck of a lot of fun and have some great history
Seiko Pogue below
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