I’m mainly into sailing ship models, so I cross over frequently between wood and plastic. Japanese woodworking tools are widely regarded as some of the world’s best. They have a different heritage than western tools, so they’ve evolved a bit differently.
A Japanese hand saw cuts on the pull stroke. (A typical western saw cuts when you push it.) So a Japanese saw can be thinner (since it’s under tension while cutting). The Japanese method of making saw teeth is also different. I don’t use western saws (except the terrific Zona saws) for modeling any more.
Here’s a link to some good, small Japanese saws: http://www.leevalley.com/US/Wood/page.aspx?p=58686&cat=1,42884 .
I cherish my Japanese hammer, which has just the right heft and balance for most of the work I do: http://www.woodcraft.com/product/140568/4-oz-hammer.aspx . I particularly like the slightly domed head.
Japanese planes are a lot different than western ones. I’ve never gotten really enthusiastic about them (because so many good western ones are on the market), but they do come in quite a few small, modeler’s sizes. Example: http://www.leevalley.com/US/wood/page.aspx?p=41221&cat=1,230,41182,41187 .
Japanese chisels and carving tools are also different from ours. They generally have shorter blades. That makes them cheaper. Take a look at this little set: http://www.leevalley.com/US/Wood/page.aspx?p=45386&cat=1,130,43332,43334&ap=1 .
Maybe the most popular Japanese woodworking tools of all are the sharpening stones. They’re called water stones, because they use water as a lubricant. There are all sorts of sharpening tools on the market these days; lots of people swear by their Japanese waterstones. Here’s the set I’ve got: http://www.woodcraft.com/product/140326/king-4000-grit-set.aspx .
And the famous, incredibly versatile Japanese nailset: http://www.leevalley.com/US/wood/page.aspx?p=40379&cat=1,43456,43400 .
I get most of my tools from two sources, Woodcraft (www.woodcraft.com) and Lee Valley (www.leevalley.com). Both give excellent service, and both publish paper catalogs that are real wish books.