For what its worth,

<tabManager background={'blue'}> <tab closeButton={true}> Hello {this.props.Name} </tab> </tabManager>

Would be valid in react.

Check out http://facebook.github.io/react/#todoExample, specifically the render function.

I think this is pretty easy to understand:

      <div>
        <h3>TODO</h3>
        <TodoList items={this.state.items} />
        <form onSubmit={this.handleSubmit}>
          <input onChange={this.onChange} value={this.state.text} />
          <button>{'Add #' + (this.state.items.length + 1)}</button>
        </form>
      </div>

I don't have any practical experience with angular (but I'd like to, and definitely think its testability is a step in the right direction).

That said, I've found react to be very declarative, especially over the raw jQuery and Backbone I'd used before. Most of the components I write have no state, and render() declares how to render them from any state, without having to worry about how to change things on state changes.