This thread is a great excuse to try new fruits, or those that we sampled once or twice and didn't appreciate.
murahilin: Do you grow your own watermelon? If so, is there a variety that sweetens reliably for you? I have bad luck with store-bought melons (and apples, and mangos of course.)
This isn't really watermelon growing country down here. You have to go up farther north in the State, and the best are grown out of the state. During watermelon season (mid summer, drive down 441between Lake Worth Road to just south of Boynton Beach Boulevard. You will find people selling watermelons on the side of the road. You must be cautious and ask questions to ensure their origin (some are actually brought directly from the fields but some people do nothing more than pick them up from the packing houses so they are the same, or similar, to what you'd get in Publix). Find the right person and you will get an excellent melon. Of course, you must know how to pick them by weight and sound (growing up in Pennsylvania, we had friends who grew watermelons, yellow ones to be precise, and the best damn watermelon you ever had..he taught me how to pick a watermelon). Its the non-commercial heirloom varieties that will be the best but since they don't do well commercially for various reasons, you will be hard pressed to find them down here. Go up to North Carolina and search out the right farms and you might.
Don't get me started about apples. I worked at my friends apple orchard in high school where they grew at least 20 different varieties. After eating a fresh picked tree ripened apple, you will never grab one of those gas chambered store bought ones again. Same with pears and plums (now of course as for pears, and stated earlier by Harry, nothing beats a "Cream of the Crop" Royal Riviera from Harry and Davids. "The Favorites" aren't bad but the "Cream of the Crop" are truly amazing.