the best seats I've ever sat in were EDM WRX seats, which as far as I know are identical to STi v4-6 seats, just all in black!!!
I swear they were designed around me... well, they were designed around Japanese people, which are on average smaller then americans, and I'm tiny, so they fit like a glove. Like seriously, just squeezed my ass perfect, hugged my waist tight, and my arms just naturally sat in a 'holding the steering wheel' position. The best seat EVER.
Makes you feel like your car loves you as much as you love it (the hug effect).
Sadly, my seats are flatter then flat..... designed for FAT people, so I my car doesn't hug me......
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Dont worry, its a controlled slide.