This is part of a tomato taste-off that was held at our house this past sabbath. In all, there were 33 different heirloom varieties, along with 2 hybrids! The hybrids had the highest brix readings of all. This is an example of breeding a hybrid for the right reason. Winners of the heirloom varieties included Old German and Caspian Pink (which tested out at 8 brix).