The only S2 that I ever thought could get out of it''s own way was the 10.3. But the build issues that Jeff mentioned earlier also apply to that boat as well. They also seem to be a bit overpriced as well.
In that range, I have always thought the better buy would be a Peterson 34. I sailed on both the 10.3 and the P34 in the early 80''s and the Peterson just seemed more responsive and willing to handle a wide variety of conditions. The P34 was also one of the first production boats to use an advanced composite construction. I don''t know if that is a good or bad thing, but it did make for a stiff, light boat.