If you're going to buy an "experienced" boat, let me throw my hat in the ring for a supercat.
I have nowhere near the sailing experience of the other posters on this forum as this is my first summer (here in mich that means 3 months).
Having said that the quote "I don't know art, but I know what I like comes to mind".
I absolutely love my S/C 17, and when talking to other owners, you don't hear many negatives. They are hard to pitchpole, they don't have umpteen lines for sail shape, Aquarius Sail still supports them (Tom is great), and you don't see a lot of them, which is kinda cool.
Anyway, the "test drive" is the free part & I don't know enough about sailing to argue the technical merits of one boat vs. any other...but I spent my $ on a supercat. I think everybody here would agree that whatever you purchase, the important thing is to have fun with it .
fair winds,
davey