One sleeper would be the old Hunter 37 cutter, built in the late 70s. They can be had for $30-40k in decent shape. They are fairly well respected. Don't know about 3 adults on it however.
For some reason there are quite a few C&C 38 out there cruising around the world.
How about a Newport 41? I would put it in the coastal cruiser category but I would have thought that about the C&C too.