10...you might PM our other moderator Jeff_H for info on good composite/custom guys he knows who does good work on the cutting edge. Of course this means a VERY high $$ boat for a given size.
The ONLY true full keel boat I am aware of being made in the US today is the Robinhood36 made by Robinhood Marine up in Maine on a semi custom basis from the original Cape Dory 36 Alden design.
When I said kevlar/aramid/composite earlier I was really talking about conventional construction but reinforced on all leading edges with the appropriate advanced material...much as Hylas and others have done...but perhaps you are looking for a state of the art hull which would be kind of a waste with a full keel!
I would also look for a watertight collision bulkhead up front .
No longer posting. Reach me by PM!