I have two Brooks plum trees. They are an off shoot of the Italian plum, but they are four times the size. They have a honey like flavor and sweetness. They make the most incredible pies, and the comes out with the consistency of firm peach pie. I dry them in my dehydrator and make fruit roll ups. And they are just plain great to eat right off the tree. We start picking them when they are still slightly green, really good. I'm in Western Washington and get a huge crop nearly every year. I planted one over 25 years ago and another one about 12 years ago, both were bare root from a local nursery. They start producing fairly heavy in about 3 years from planting, but the fruit got really sweet and flavorful after about 5 years. My older tree seems to produce more and taste better than the younger one.
Brooks Plum, everybody should have at least one!