We swear by wild tomatoes/everglades tomatoes. Late blight blew through
the garden and only the wild and everglades survived. They may be small
but they are tasty and fight off everything (so far). They do finally
succumb to root knot nematodes though, but they fight until a sudden
death.
Read more about the new virus in S Florida here:
http://www.growingproduce.com/vegetables/tomatoes/new-virus-detected-in-south-florida-tomatoes/