Glad to hear all the positive feedback on the 313. For a while I thought I was going mad as when ive mentioned that my zed has been as quick "on the road" from 30mph upwards with a couple of other cars such as an audi tt rs, a bmw 335i or even a z4m, ive had people say "oh they cant have been trying" - when on paper theres very little difference in performance and even less difference on the road.
I think a lot of people on here have only had experience of the older 276bhp zeds which are a totally different kettle of fish.
Not wanting to rain on your parade stew, but the consensus seems to be that the way the later models drive is nicer and the interior is more refined but in terms of direct speed there is not a lot in it from those with a considered view of the issue.