For those who have dvds of these shows are they good and what especially are the names of the ones (shows names) of the concerts he did in Japan is it?

Is that where the Nude Tour took place?

Both tours made stops in Japan. In the USA, there has never been an official release of either tour on DVD or VHS; though, they did play quite a bit of the Nude Tour's Tokyo shows on TV back in 1990/1991. And Livesexy is pretty easy to get, but I don't remember hearing about any Japan dates circulating (on video) from the Lovesexy tour.

On the Lovesexy tour, he played at Sendai, Tokyo, Nagoya, Fukuoka, and Osaka. But the only official videos of the tour are Livesexy parts 1 and 2, which was taken from the earlier concert in Dortmund, Germany. I think it was only released in Europe.

On the Nude tour, he played at Tokyo, Hyogo, Sapporo and Yokahama. The second night at Tokyo, 31 August 1990 was taped and later broadcast on tv in Japan. There is no official video of this concerts, though bootleg copies are floating around.

The Lovesexy concert is sheer brilliance, a bit of everything, dancing, guitar playing, a piano segment. The Nude tour is okay but not as good - it is a very dark stage and the musianship isn't as evident as on the Lovesexy concert.