The Subaru was a more sturdy car, no doubt about it. From road courses, autox, and rallyx the Subaru constantly begged for HARDER driving. You hear about these cars breaking (transmission issues in the EVO) - and these issues pertain to idiots that will constantly feel the need to do the 7k launch at every stoplight...
Here is a review based on my experiences thus far...
I started off driving a 1998 RS w/ej20 (wrx motor swap)
-->Mini Cooper S (which then I sold to my older brother)
-->WRX w/vf30 etc 300+ whp
-->STi w/315+whp
-->Stock EVO IX
Power:
The Subaru felt more "manly". Around town as soon as you slam the pedal to the floor you feel the pull, nice torque due to the 2.5l motor. Around 5300-5500k the STi fell flat, no power at all. The vf39 (stock STi turbo) is a great turbo for autox, very responsive but lacks the top end power. I added a turboback exhaust, cobb accessport, and a protune. I ended up with 315whp/336wtq. At the time the car felt strong, that lasted about a day, literally. I needed more...
Now, the EVO. Taking it very easy for the first 1k miles, breaking in the motor etc. Changed the oil out at 1k, full of gas etc. Now...the fun

: I made a right turn on the highway on ramp and the car felt like a fighter jet. Around 3300k the car took off like a bat out of hell...I was very shocked that if felt the way it did. The car lives in the upper RPM range, which is the complete opposite of the STi. The power on the EVO is very linear...feels much more smooth and the 16g (stock evo ix turbo) continues to pull almost all the way to redline...
As far as modifications go, the EVO is more receptive to anything added.
Handling:
The STi in no way is as responsive as the EVO. The Subaru feels heavy, sluggish, and really takes an understanding of the DCCD (center diff) to be able to drive the car the way it wants to be driven. If you leave the DCCD in Auto, and drive really hard --- understeer. Going through turns at road courses I constantly felt the need to be playing with the DCCD to really get "comfortable" with the car. I added 27-29mm front swaybar, 26-28mm rear sway bar, front and rear strut bars, camber plates, STi pink springs and a ton of other suspension goodies...
The EVO feels like a go-kart. I drove a Mini Cooper S for over a year, and this car feels a lot more responsive than that. With little effort of moving the steering wheel the car is "on its toes" and ready to be thrown in that direction. I was really anxious to see how the car felt when it lost traction - so I went to a great place I know of (no, not a school zone) When sliding in this car, it feels effortless as far guiding the car and gaining control. It acts like it already knows what to do before you even steer or touch any pedal. I was shocked again.
So far, I am loving the Mitsubishi. It feels great to drive, and it should be even better with some track weekends coming up this month at VIR
I will gladly post more pictures if people want to see them, now I need to get off my lazy butt and get some clients

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-Martin