corsair tri''s (or better still, contact Farier and get the new plans from him and get a better boat built if you have the $$$$)
I was on one of these a while ago. This was the 31, the "cruising" model. They were embaresed that they couldnt get faster than wind speed (we did have some 5'' swells, that made keeping momentum dificult) We were pointing closer than any mono I''ve been on (I''m sure the 6'' c/b didnt hurt) and litteraly jumping across the waves) it was nuts.
That being said, I also lost my lunch.
It seemed perfectly stable, even at 17 knots with a hull burried, and I wasn''t afraid of it flipping, but I''m not sure how much I''d trust it for crossings.