Component Router will be the stock router in Angular 2, it is supposed to fix most of the problems with the Angular 1 router.
I've personally held off refactoring my Angular 1 routing code to UI Router because I didn't want to do it again once Component Router is released for Angular 1.3, oops I meant 1.4, oops again I think I mean 1.5. But I am starting to reconsider.