Answer:
Darren bought a differentiated product.
Explanation:
The differentiated product enjoys a distinction from similar products/brands in the market. This distinction may be real or psychological. Real distinction reflects from the ingredients, quality, utility, or service which the product gives. Psychological distinction is a feature of subtle sales appeals.
Other types of product include Customized, Augmented, and Potential Products. Customized Products are built to customers' specifications. Augmented Products are products with added manufacturers' improvements. Potential Products are tomorrow's products limited by economic and technological resources.