Mike,
As far as the stock shafts that Titleist offers, the Diamana D+ White has the lowest spin and launch.
So you may want to test this shaft with a fitter if your struggling with high spin issues.
Best of Luck!
Not exactly true. Checkout the link to the graph below. There are a lot of shafts that are lower spinning and launching. For example, the OBAN Kiyoshi.
http://www.fairwaygolfusa.com/sp/images/titleist/913/titleist-913-shaft-chart.png