The Fountain has what many commonly refer to as a 'beak'. This means that 29' is probably closer to 27-28'.
One thing to note is that each manufacturer has its strengths and weaknesses. It would help us assist you better if you outlined where you boat and what your goals are (top speed, cabin/cockpit space, ability to handle rough water, etc).
If you are after sheer speed, quality and unprecedented customer service, I would take a 28 Sunsation over any of these boats any day of the week. Another boat you should look at in a similar price range is the 28' Nordic Heat.