Welcome to the forum.
Not exactly sure what you're asking, as you didn't mention what model of Faroudja you have. Are you asking if the Faroudja will scale high definition? If you have an NRS, as I do, it only handles 480i. I understand there might be a high-end Faroudja which scales high definition, but have no experience with it.
Personally, I don't see how making a satellite receiver decision has anything to do with your Faroudja. You should be evaluating picture quality, reliability, user interface, and the experiences with others on this forum with the various makes and models. Take a look around and use the search function to narrow things down.
Good luck in making your choice.