My results thru 7/31/11 for comparison purposes
Here are my results so far through 7/31/11. Maybe you can compare your results with these (if, of course, you're as retentive as I and keep statistics).
I have 5 plants in 18 gallon containers on my balcony. They each are at least 8 feet tall and are still getting taller. I used Scott's Moisture Advantage potting mix and Dynamite 13-13-13 granular fertilizer. I have southern exposure and get upwards of 9 hours of sunlight per day during May, June and July. It's been extremely sunny and hot this summer in Baltimore. I planted on May 5, 2011.
Mortgage Lifter: 28 tomatoes from 2 plants.
Moskvich : 17 tomatoes (but 3 succumbed to BER)
Brandywine : 35 tomatoes from 2 plants
I've had minimal pest issues, possibly due to morning hose spraying and a dose or 2 of Neem oil.