Buffalo currently maintains three lines of products: LinkStation series for home users, TeraStation series for the small business and enterprise-level tasks, and TeraStation WSS (Windows Storage Servers). The complete product list can be found here
Some end-user reports claims minor technical troubles using the Buffalo NASes in mixed OS network infrastructures. Solutions for these troubles can be easily found in Internet.
The external design of Buffalo network-attached storages is of solid, conservative-styled and somewhat bulky appearance. It looks and feels as "good old" thing until the last inch. Internal build is as solid as outside, with a good frame and quality parts inside.
The software for Buffalo network-attaching units is Buffalo NAS Navigator, readily available primary in Windows version. These are some troubles using Buffalo protocols with Mac OS X Lion reported. It can be strange, as Buffalo actively supports new Mac OS X standards and was one of first manufacturers developed an external drive for Apple's new proprietary standard of data transfer, Thunderbolt.