Performance wise the ek9 stays with my teg for 1st and 2nd gear but after that it starts pulling away and by the time i'm in 5th iv pulled a long way from the 9. The k20's are just so torquey and the 6 speed box is superb in that the ratios are nice and short.
Handling wise the 9 is far tighter and really does out handle the 5 but to be honest its a bit hard to judge because the 9 has hks coilovers where as my 5 only has eibach springs on standard dampers. But i think if both were standard the 9 would still just have the 5
EK9 has a 5zigen border 304. 1 of the best sounding exhuasts iv ever heard