I was reading about the new Avant Gardener magazine (new editor, old mag) and came across this comment about an upcoming topic:
"Have you ever wondered what's the difference is between 'Striped German', 'Big Rainbow', and several other large-fruited yellow-and-red marbled tomatoes? There isn't. They are all names for the same variety and we explain why."
http://avantgardener.info/
I don't subscribe so I don't know what issue it was in (Sept. 2012 or later).
I grew Striped German this year and liked it, though it was late. I was wondering if anyone had seen any evidence that these bicolors are all the same variety.