I think the Project and the NAD retail for about the same amount and my first jump would be to the Project.The Project is a more recent design and the inside componentry is bluntly..superior.Having said that,the NAD runs off a DC supply and if you like the idea of using a regulated supply which you can use with the NAD i.e 24V 1amp DC,this lifts it's performance markedly.The Project uses an AC supply.The Cambridge is a little more expensive(640P?)so I would expect the extra cost would translate to performance.