Sharpeblue is the original southern highbush and it is still one of my favorites for flavor and ease of growth. The main knock against it commercially is that the berries can scar when picked, so they don't hold as long as some others in storage. It also ripened a little later than some of the ones that came after it. Harttman's was one of the few places we used to buy plants that also sells retail.
https://hartmannsplantcompany.com/wholesale/product/sharpblue/Jewel is another good one. Berries are a little larger and more uniform but just a touch more tart. Windsor had huge berries, but the bush was a little more finicky. Gulf Coast was a very tough plant--developed by USDA instead of IFAS the berries were not quite as tasty as Sharpeblue, but they were good enough. Emerald is large and poor flavored in my opinion. Spring wide was a little better, but still not my favorite. Misty is disease prone. Saphire was also disease prone, but the berries were nice. Paloma was small. Star never got enough chill. Rabbit eye varieties were not very productive for us, but we never tried many because the season was wrong. There are a bunch of others that I never tried because we got out of the business. Of those, I hear that other people think highly of the flavor of Sweetcrisp. I have no idea how disease resistant it is. All southern highbush varieties can grow indefinitely in a 25 gallon pot or 1/2 a 55 gal plastic drum with holes drilled for drainage. Prune after harveat in May. Fertilize with Monopotassium Phosphate and 20-20-20. A fungicide spray every now and then is helpful.