The Kino 2-disc is a must-have. I'd also recommend the rest of the Griffith Masterworks box, but the music scores for Intolerance and Broken Blossoms are atrocious.
The Eureka region 2 has better contrast and a sharper picture than the Kino. I prefer the Eureka for the that reason. The Kino has accurate color tints which are too intense to my eye. They should have lightened up a little on the tints. Kino for supplements, Eureka for the film.