I don't drink much sake because it's a rather expensive drink in Europe. Of course there is Gekkeikan sake, brewed in the USA, and easy to find. Unfortunately, the cheaper Gekkeikan is not tokutei meishoshu but futsuu-shu. I'll order some 180ml. sample bottles from sake.nl and keep track of the names and quality.
More information on John Gauntner's sake-world.com
In the meantime I bought two sake cups on eBay.
An ONI-HAGI WARA-HAI-YUU GUINOMI (rough sand straw-ashes glaze sake cup) made by Deishi Shibuya. KOUDAI (=the foot) of this cup is WARI-KOUDAI (cut KOUDAI), often seen on Hagi ware. Hagi ware is excellent for sake. Even five days after use the cup still smells of sake. I guess this cup should not be used for anything else but sake.
And a GUINOMI (sake cup) with black iron glaze by Seigan Yamane. The glaze contains a lot of iron. The clay is HIME-HAGI-TSUCHI (fine-grained Hagi). Works very well with Nigori sake. Visually that is.