Should be a great boat to sail - very responsive and quick. Beware of possible IOR issues, however. Narrow bow is good for going upwind, but can be wet, since the lack of surface forward lets the bow dig in. Some IOR designs have flat sections forward of the
keel, trying to fool the measurer. Sometimes these might pound in a seaway. Tucked in stern and possible bustle can make IOR
boats squirrely downwind, too. This, coupled with a long, narrow bow can lead to wipeouts and broaches. Have a look for funky shapes aft of the
keel. Hefty beam provides support for upwind sailing, but crew weight on the rail is often required to hold the boat flat. (Note
photo in the Sailboatdata link you posted with everyone but the
skipper on the windward rail, and it's not blowing that hard - 150%
genoa and no
reefs in main.) The Ganbare design may not have all these traits, but it looks like she might have some. Reports are that they are fantastic boats and sail fast, but you need to be ready for them to get the most out of them.