I order my Brandywine in bulk from
http://www.hpsseed.com
I have always grown the Brandywine from seed and from that company.
Most all of the first blooms on the Brandywine are megablooms.
I have not supported my large clusters of tomatoes and I had a whole cluster
of large Brandywine to break off from the vine.
It had one very large fruit on it but
not my largest. Wish I had a few of those plastic truss supports. I think they are at
http://www.hydro-gardens.com
I have a few Brandywine ripening right now. (not the largest)
I have some early signs of blight. Been removing those leaves and I have to spray for it.
The plants need to last at least another 8 weeks.