I have written several stories which feature a vastly superior replicator. Actually, it is much more than simply a replicator, but I really don't know what to name it. It is a descendant of the basic replicator as seen on "Star Trek," but it has evolved into much more than that. The driving force behind the replicator is an AI that is seven billion years old. That AI can answer questions as well as supervise the replicator, but it cannot make suggestions. However, that restriction is stretched on occasion.
The first story posted in the series is "Paradise Found" and should be read first, because it has the backstory of the replicator. The second story is "Damyankee in the Wild West," and is only related to "Paradise Found" by the presence of the replicator. Other than that, it is a purely independent story.
The replicator has an unlimited energy source because it uses Dark Energy. The raw material is Dark Matter, and any item made by the replicator can be recycled back into Dark Matter when it is no longer needed.
Yes, this is very much like a magic ring or magic lantern story, so keep that in mind before you complain about it. I have started several more stories using this replicator, but I don't know when they will be finished. In any case, they will not be posted until they are finished.