Regardless as an owner of both... I'll already declare WRX>SRT4. If you want straight line, cheap unreliable speed, SRT4 is the car for you. If you want an all season car that's nicer looking, has much more stability, better reliability, better handling and better overall performance the WRX is it. I kept dead even with a 2007 BMW M5 in my SRT4 (Yes the 500 hp model), but it comes at a price. I made a lane change as normal.. and my car almost spun out because i was doing 80. I already took this WRX up to 70 plus on the mountains with no understeer or loss of control.
I'll take pics of my gray button for you guys..... i pushed it and nothing happened. Btw this guy before me was a bean aka ricer. He lowered it so low... i bottom out on the smallest bumps and actually lose handling performance. Now i need to find some stock STI springs to raise it a couple inches ; \.