Well, in my garden Aphids have been easier to control than rust. Aphids may take a few spraying with soapy water and a very difficult case might require something a little stronger. In my garden rust is not so easy to control, and rust causes much more unsightly foliage. So, if I were given a choice, in my garden I would certainly pick aphids. But I don't have to choose, I already get both of them.
