If you like a B16, then get the EM1. For some people, like myself, the EM1 wouldn't be enough for me and i'd take most of what makes the car an EM1 off, and replace those parts with what I'd prefer to have. In that instance it would be stupid to buy an EM1. The DX has it's benefits chassis wise for modding like lighter weight and front brake upgrade options. The Si is just more as standard and usually further along than a lot of people because some can't afford to swap