For racing and crusiing capabilities I would recommend you focus on C&C and CS models, as both are brnads popular and available in your neighborhood, and IMHO offer the best combination of both. The CSes are a little more pricing but they tend to be more boat...the C&C 25 would make an excellent first boat and you should be able to get a very well-maintained version for under $10K. For $50K you can fit into an excellent C&C 35 Mark II or a CS 33.
Ask around to speak with people who have these boats and see why they are special. Tanzers and Tartans are nice boats, but not that special (except the T30..)