Sungold- while the one plant hasn't looked all that great, it daily gives me a handful of sweet fruit.
German Lunchbox - can't say it's especially tasty, but this is my second year of a couple plants that keep on putting out fruit all season, where other tomatoes are failing. I think the cherry and small, clustered tomatoes like this have a better chance of long life. They are a nice size to halve into salad, and dehydrate into tasty chewy bites.