It really depends which engine you get with your Cruze. If its the NA motor, then either a supercharger/turbo kit or a ecu reflash by a really good tuner. If its the turbo motor, then either intake or exhaust will get you good numbers.
Most turbo car's bottle neck is their exhaust system. Since they're pushing gasses out at a higher velocity than NA cars they need a more free flowing exhaust system. Once you've done that definitely upgrade the intake also.
It depends on what your requirements are. Let say you are one of those who need really power i guess Turbo is the best option however,fuel consumption is something you may want to consider before upgrading.