Weta Marine is a solid company and the quality control on the boat is very good. They are a pleasure to work with in terms of customer service and are really working hard to constantly improve an already good product. It is the fastest 14 boat that I have ever sailed, but it is just 14 feet. I think anyone who has sailed the boat may disagree with you in terms of the thrill factor.
PWC? That does not even deserve a rebuttal. It is a blast to sail downwind and its upwind performance is very solid with its daggerboard making the boat tack on a dime. It is also a boat that makes it easier and quicker to get out Sailing since one person can completely set up from trailer to water in under 20 minutes (while enjoying a beverage). Is this an F-18? No, it isn't trying to be that. In terms of it being underpowered, a new smaller main is in development for higher wind conditions and also for use in disabled sailing programs.