the term value is is a bit of a broad stroke - but generally speaking I think the most "valuable" outsourcing solution requires leveraging of a hybrid of resources across multiple locations. Our shop focuses on core services in scalable and cost-driven countries (India) while engaging in higher-level consultative and communication-based positions across Eastern Europe; with management and sales/customer service driven solely out of the US. The most successful outsourcing or "globally distributed" infrastructures I have been blend a multitude of market resources and provide the best overall team composition that mitigates each market's risk (which can be unique depending on the market) but also maximizes the pros/upside of each market you are in (driving costs lower, availability of recruiting new resources, educational infrastructure, governmental and policy support etc.)