Comprehensive studies on 2-D honeycomb-type magnets (NBu4)[(MFeIII)-Fe-II(ox)(3]) (M-II = Mn, Fe, Co, Ni, and Cu) reveal that the family orders ferrimagnetically at comparable temperatures (21-43 K). Moreover, the mixed-valence (FeFeIII)-Fe-II compound magnetically orders at an elevated temperature (43 K) relative to other (MFeIII)-Fe-II compounds (21-28 K). The relevance of these magnetic characteristics to other families is reviewed.