Guess it depends on what you are used to driving but I went from a diesel golf to a 313 zed and was quite underwhelmed by the performance. Sure, it was quick, but it just didnt feel as quick as I expected. I guess the last proper "quick" car I had before my zed was a 220bhp Renault 5 GT Turbo which would do 0-80 as quick as you could change gear and literally violently throw you back in your seats when the hybrid turbo kicked in. Im also used to sports bikes like my R1 etc. So maybe for me a NA "quick" car just didnt have the right feel. Saying that, my 123d does 0-60 in 6.2 seconds which is only less than half a second slower than a zed and that too doesnt feel quick until you look at the speedo and think "christ i didnt realise i was doing that speed", so maybe its just me!
I always bring this up but my old EP3 Type R felt much faster than the Z, however if put in a drag the Z would probably win. I find It's all about how the Z puts the power down, it has no drama, just smooth progressive acceleration through the revs. It's deffinately one of those cars where you dont realize how fast your actually going in it. It's actually my biggest gripe with the Z, in stock form it's a little boring for a sports car (in my opinion of course).
Oh don't say that, I'm getting rid of my EP3 Type R as it just feels so slow. Amazing on track as you are always in VTEC but everyday driving it is just slow. Top of my list as replacement is either a 350z or Impreza STi so I hope the 350z doesn't feel slow as I will be gutted. I am used to a 300bhp Impreza WRX and an Elise S1 so I might be a bit spoilt.