The true Brandywine is pink, and Sudduth's is the original Brandywine, are the fruits basically identical? Do they both have the (quote)
potato Leaf foliage?
Any mature fruit's
seed should be mature and viable. If you want to be sure you have Brandywine
seed, save the Sudduth's. If you like them both, save both, if you're convinced there's any difference other than
seed appearance, it may not mean too much. Brandywine has been spread far and wide and many totally unrelated fruits have been deemed "Brandywine" for, most likely, the commercial appeal of that name. Red BW, for instance, has no relation to the true, Sudduth's BW, there are now yellows, I believe even a green-when-ripe, none have any of the genetics of the original introduction. A great tomato is a great tomato, though, if the fruits differ, save
seed from both and look forward to more great tomatoes next season.!!!