The purpose of this registry is to compare the safety and the performance of the NEVO™ Sirolimus-eluting Coronary Stent, once commercially available, to the CYPHER Select® Plus Sirolimus-eluting Coronary Stent in complex subjects presenting with acute STEMI for primary intervention, diabetes mellitus or multi vessel disease. The second purpose of this registry is to evaluate the safety and performance of the NEVO™ Sirolimus-eluting Coronary Stent, once commercially available and the CYPHER Select® Plus Sirolimus-eluting Coronary Stent in complex subjects diagnosed with acute STEMI for primary intervention, diabetes mellitus and/or multi vessel disease.