as a melos 333 owner (music director version), i'm glad it fared ok in such company! :>) while it has remote, it doesn't have a ht loop. not sure about the others you mention.
hi-end preamps that *do* have ht loops include sonic frontiers, vtl, arc. i'm sure there are others. if you have a chance to hear the vtl tl-5.5, i'd be interested in what ya think...