Tried another Japanese noodle place a few days ago that I've never seen mentioned anywhere: Yokohama, on 46th street, on the corner near 9th avenue. It's only got 8 seats. The cold soba at least is quite good. In fact, I (and my Japanese dining companion) prefer it to Nippon on West 53rd(I think), which makes their own noodles from scratch and is more expensive. This is a real hole in the wall place.