Millennium Falcon
Han Solo acquired the Millennium Falcon from Lando Calrissian in a high-stakes sabacc game. Some versions of the story note that at the time Lando owned a used starship lot and had specifically bet "any ship on [his] lot". Han cunningly claimed Lando's own heavily souped-up custom job of a YT-1300 which had been carelessly left with the other ships. The Falcon itself was a chop job from the start--having been cobbled together from two scrapped ships in a Nar Shaddaa junkyard. Since it had been pieced back together, more than one previous owner had worked on improving the design to match some vision of perfection. As a result, any given component on the ship was unlikely to be joined to components made by the same manufacturer. Under Han, speed became the ship's raison d'etre. Solo pushed the ship to its limit and beyond, going so far as to equip his ship with specialized devices to streamline it while it was in a tachyonic state.