Google it.
I'm growing heirlooms....Krim Brandywine. They have a rich taste. Very addictive and superior to hybrids...in my opinion. The Black Cherry tomatoes were outstanding.....superior in taste to sweet 100.
I’m growing Black Cherry this season, too.
My fave heirloom is Cherokee Purple for flavor, but this year I am trying a hybrid called Cherokee Carbon.
We shall see. ;)