i m in doing B.E in E.C jst cmpltd my 6th sem. i m confused betwn M.E nd M.TECH. according to future option what is THE BEST??

CTULLY I M INTERESTED IN BOTH FIELD. bt whch field make my future very good? Is GATE is only option to get admission for MTECH in any state?? to get admission in any collage of INDIA nly GATE is applicable?? or for different state different exams need to be pass??