We started out with mostly all heirlooms but I have moved more to hybrids. Less cracking, more productive. I have to do some heirlooms since a lot of people want them but at least most people just want a good, red, ripe, tasty tomato!!! I may try Big Boy this year. But Better Boy for sure!
Now, possibly the grafted tomatoes would do better for the heirlooms. I don't know. Would have to explore that.