jo, Soldacki and Marianna's Peace are both pink beefsteaks, both Potato Leaf plants, so very similar to Pink Brandywine in many ways. Just less cranky and temperamental. If you can grow PB, you can grow either of these.
There's another one, too, called Brandywine OTV, which is an excellent tomato. It's a pure variety that came about after an accidental cross between a Pink Brandywine and an unknown yellow. A couple of US tom experts saved the seeds, grew them out over five years, and stabilised the variety. So it's a Son (or Daughter) of Pink Brandywine. It's a red beefsteak with orangey shoulders and another Potato Leaf plant.
Here's the only photo I have of a Soldacki. On the kitchen bench, sliced for action:
Delicious meaty tomato with tons of flavour.
You can have seeds for all three if you like.