I came across this article about disease resistant tomatoes. I happen to be growing Mountain Magic this year,(mentioned in the article) and they are the least bothered by early blight.
https://www.growveg.com/guides/bligh...worth-growing/
I have sprayed up until a few weeks ago, the hot hot humid weather has worn me down spraying wise. All my varieties are listed as disease resistant, but even with spraying I've got some blight and am pruning it out. My options are spray again or see a lot more blight most likely. I may try Bill's bleach spray, but it's not a preventative. None of my plants are affected enough look like dying and are producing a lot.
I'll take some blame for my blight, I didn't prune properly to start with, and the foliage midway up the plants got very crowded and couldn't ventilate properly. Lesson learned for next year.