David, how are your experiments going?
Production all but stopped a few weeks ago - I've been getting at least one deformed, cracked heirloom every other day, some cherries, while Rutgers and Early Girl have been consistently putting up some fruit, but they don't taste that good.
Here is my tomato bed today. Red tomatoes are the EG and Rutgers. There are a couple of babies on Mortgage Lifter and one large green on on Brandywine. Brandywine is still growing crazy.
I've sowed inside for the fall Cherokee Purple, Pineapple Stripe, Spitze, Russian Purple, Brandywine and some others... I am amazed at how fast they germinated - 9 days from planting to repotting!