I test drove one as well... and its an absolute monster. I would get wheelspin while in 3rd gear (auto) at about 60km/h (i guess around 35-40mph?) once I hammered down on it briefly.
Serious machine... this is more of a weekend car or a summer car than anything else.
The seats IMO are better than the 335. The overall drive/handling though, the 335 takes the cake as it has that 'fun factor' which can't be duplicated.