I've grown Brandywine, Brandywine Pink, and Yellow Brandywine. For me, 'Yellow Brandywine' has been the best producer -- the other two were lackluster in production (although equally huge on taste), even grown in the same conditions as Yellow Brandywine (an every-year tomato for me since I first tried it). The only other yellow that comes close for flavor & productivity is Mr. Stripey.
And yes, I'm pretty sure the name is 'Yellow Brandywine' (historically), even though listed in our DB as 'Brandywine, Yellow'.