I wanted to say choose STi cause I'm a fan of subaru since I was young and even when I'm playing racing games the first car I always wanna get is the subaru. but since you choose the evo is a good thing also. Like what people always say, follow what your heart desire. Asking other people opinion is one thing, but most important is yourself. good luck and cheers with your evo man :D
All the best out there, and drive safe :)