Heirloom tomatoes can't be beat! I always grow Cherokee Purple, Black Krim, Rutgers, Marglobe and any one of the pinks, but this year added Mortgage LIfter and Mountain Pride, which I'm not sure is an heirloom, but it sort of literally flopped in my garden. No production whatsoever, so I won't try it again. I've tried Oxheart, but did not like it, plus the plant practically ate my garden and the roots were unbelievable. When I tried to pull it out in the fall, I had to resort to digging them out. A monster of a plant it was and not worth the effort. When I retire and can have a proper garden, it will be all heirloom plants!