Backbone.Rel: Backbone lightweight model relationship manager
github.com
github.com
I am by no means an expert, but syntactically, I prefer how backbone-relational does things so that it looks and feels more like working with native Backbone objects, but I honestly don't know what's different about this otherwise.
A real pain point for us at with Backbone is transversing these relationships in JS. We end up doing redundant renders as related models finally come into memory.