@Scoob
Not sure if your questions been answered. But to summarize this thread. The luxury ships are not the "best" at exploring, as many in this thread have said there are other ships that do certain aspects better. But that's not the point of Saud Kruger ships. You're not doing it because it's "the BEST" at something. You're doing it because it's stylish, and luxurious.
You're not trying to get there fast, you're getting there in comfort. You're not showing up in an industrial looking flying gas can, you're showing up in a flying palace. Your interests are not analyzing some rock or studying nebula. It's entertaining the Elite of the Galaxy in fine dining, dancing and partying comfort all while showing off the view of the stars around you.
Let's face it, you're not out there in a Saud Kruger ship because you're trying to "get somewhere", you're out there because where you ARE, IS the place to be. You keep your friends and associates to an absolute minimum. Why? Because people knowing you is a privilege, and you knowing too many people just waters down the experience.
In short, you don't NEED the fastest ship or the farthest jump range, because you will explore at YOUR convenience, not the universe's.