I just sold my 06 sti that had a 300 whp/306 trqe. Car handled great, had lots of power and was overall really good to me. No problems even with a tuned engine running 19.5 pounds of boost for over 60k miles.
I wanted something more luxurious but still had raw power.
I will start driving my 2010 m3 daily on this Tuesday and will report back. I cant imagine i will want to go back to the sti..