The evo and the sti are both very extraordinary cars both capable of pushing power and torque throughout the whole power scale. The evo having lower compression I think about 8:1 and the sti at about 10:1 not quoting going off the top of my head. But me personally I like the evo because the engine is fairly easy and to me not as complex as the sti. To others it might seem different but I would go with the evo personally.