MTG stands for MeTaware Group and it is the original software for your box. Dreamsoft is a privately developed software by Denny supporting the MTG boxes. is DS better than MTG? i don't think so. the only advantage i see with DS is it has Seca support and MTG has been proven also to work even in cloned boxes of Metabox. the rest of the packages you mentioned are not opened by either MTG or DS.