Brian,
if you are looking for a dinghy/keelboat, the RS K6 could be in interesting alternative. I am sailing a cat myself, but consider the RS K6 because you can bring non-sailors along as well. While certainly not as exciting as a cat, the boat is very fast and easy to handle.
http://www.rondarboats.com/k6tests.htmlhttp://www.ldcracingsailboats.co.uk/rsk6.aspCheers,
Philipp