2 years ago I grew Porter, CHearing Porter and Porter Pride. Honestly I could not tell you the difference in flavor between any of them. Between the Porter and CHPorter the plants were the same egg size and shape, pink fruit with a ref flesh. CHporter germination rate was much lower. Perhaps the seeds were older? Dunno. Porter pride is a little smaller than a tennis ball and red not pink. All 3 taste about the same. All three are quite productive but the porter pride was slightly less so. All 3 did produce up to high 90's but slow down considerably. Over 105 it produce nothing, but in the fall when things cool a bit, new blossoms emerge
Also noticed they do better with a little less watering than the other varieties I have grown. Its a good tomato. Good flavor.