IMHO people comparing non gti6's cant give a real opinion as they VERY different.
And also if you REALLY cane a GTI6 you might feel a bit different to if you just drive one pretty hard (obv some here has drove them mega hard too).
I DONT like them. Purely cause on the absolute limit the liftoff oversteer is snappy and lethal. On a 1.9 205 GTI the liftoff oversteer is spot on and you can have a god play with it. On GTI6s its just not the same, snappy and horrible, even at far lower speeds than id imagine.
Ive driven 2, both elt the same, so doubt it was a 1 off.