We did a straight up trade and I love it. These seats are perfect for the daily where you take a lot of trips. My stock seats hurt my back a lot and I don't autox so this was a no brainer for me. I even got the blue carpet as well.
I have been thinking of trading my stockers for an STI......are the seats different other than the obvious? looks good!
For me at least there is a lot more lumbar support. The seat portion is a bit wider which I wanted as I don't track or autox the car and I drive it daily 30 miles each way to work and I travel a LOT to NY. Comfort quickly outweighs staying planted for me.