I am woodworking in a cramped Brooklyn apartment, which restricts me to using hand tools. I have run into a few situations where that can be challenging with the basic chisel-plane-saw set. Two in particular come up often: sliding dovetails (I make a lot of things with shelves) and tongue-and-groove joints (for frame-and-panel situations). I can do these with a saw and chisel, but it's very time consuming and the results are usually sloppier than I'd like.
I happen to have gotten into this from the angle of Japanese woodworking, so my setup (viseless and on sawhorses along a beam with a planing stop) works much, much better with tools that pull rather than push, and that's also become my natural approach. I'll admit also that I feel that Japanese steel is superior, but I could be convinced that that doesn't matter too much for these sorts of tools.
That's the background, here's my question: what's a good source for Japanese joinery planes for these tasks? I am having trouble finding many of the ones that Toshio Odate describes, like the kikai sakuri kanna ('machine plow plane') which I'd like to use for grooves, or the ari sakuri kanna and sumi kiwa kanna for sliding dovetails. I can find them on ebay occasionally, but they tend to look pretty trashed. Where can I look?