Not sure there is any best Japanese DD out there but the two following are certainly in the top few.
But I do love my Pioneer Exclusive P3 table aka 1979 which has given me almost 10 years of fault free performance. Only available at the time in Japan.
More recently the Technics SL1000mk3 aka SP10mk3 with Thales tonearm is also excellent.
There are the two tables on the left of the rack in the link below
https://c2.staticflickr.com/2/1845/29654559497_b63d314ab5_b.jpg
But I do love my Pioneer Exclusive P3 table aka 1979 which has given me almost 10 years of fault free performance. Only available at the time in Japan.
More recently the Technics SL1000mk3 aka SP10mk3 with Thales tonearm is also excellent.
There are the two tables on the left of the rack in the link below
https://c2.staticflickr.com/2/1845/29654559497_b63d314ab5_b.jpg