I love to grow anything but water melons get me fired up! Some types are much easier than others to deal with. I always grow my favorite Crimson Sweet! It is an easy melon to grow in that fungus and pest problems are no problem. I think it is the BEST tasting to. Really sweet and firm and not to seedy. Always plant a couple of new types every year. Just for the surprise and hoping to find something that makes me want to repeat growing it.
I grow a few apple trees and do ok with them. The Golden Delicious has produced a few good tasting apples. My best producer is the Granny Smith. It is a small tree but man the apples get big on it. I have a Macintosh but it so far is a disappointment.