Both amazing cars, sti's do tend to be harder to upgrade, and evos IMO come a little more track ready, stiffer chassis, better handing, if autox is what u wanna do the evos probably alittle more ready to go. If you want to do AWD drags, sti is you. The sti is a little faster (300 hp) but they also cost that much more. To get an evo to the hp would be the difference in price is what im trying to say. And the evo already takes most saloms, and tracks. B4, I4 your choice.