Both emanations of this book are excellently done. I chose the John Wayne one because the Duke is inimitable. In this version it was never better to have John Wayne be himself, because the Duke is the Duke, whereas the Dude is a bit more of a chimera. In both the banter with Lebeef is excellently played off and his friendship with Mattie Ross is sweetly familial. Bridges plays the role in as a del... Moreightful drunk, proud and stubborn. Each have their merits. The acting is definitely better from the modern version. Brolin has added charm, but Dennis Hopper as the ringleader in the former version counterposes nicely. In all, they are close interpretations - even though the Coens 'claim' to have never seen Hathaway's version.
True, the Duke is the Duke, but he could only ever be The Duke. That was his one character. The Dude, however...well, Jeff Bridges can be more than The Dude.