Look through your seeds and see if you have any
Arkansas Traveler (or just "Traveler" or "Traveler '76").
This is a popular tomato in hot and humid areas of the US,
open-pollinated (so saved seeds will come true, assuming no
chance insect created crosses), with lots of reports from
different people of good production and flavor, and according
to the brief article below, fusarium wilt tolerance.
http://www.arhomeandgarden.org/plant...o_traveler.htm