Pass data between different components, best practice

Hi, SAP CRM Gurus.

In this discussion I would like to clarify the best practice for data transfer between two different components.

In general, the common way to share the data between different components is data binding via binding of context nodes.

This way is ideal when we're talking about sharing of complete parameters set, that are stored in context node.

But what is the best practice, from the correct approach and performance points of view, for the case, when we want to share the only one, single parameter value? Should I still define the context nodes in desired components or there is any other more suitable way to pass this single value between two different components?

Thanks.