Jim, I got my Kuro Shinjyu from Orchids Limited 3 Summers ago. It's grown pretty well and is one of my most "well behaved" ones. It was a small plant when I first got it and has put out many new growths. It's also bloomed last year and this year.
If you are looking into Ryukuhou-no-shima, I'm assuming you want to spend $1000 on a neo???
If so, there is another one called Magatama. It is a very small bean leaf with ruby roots and the top leaf sometimes has white tiger variegation. It's really cute.