fair enough,
my first test drive actually put me off the car to start with, got taken down a busy road in rush hour and one junction of the a12 in heavy traffic.
my mate persuaded me to go again and i had a nice long drive out and really got to stretch the legs. same car but felt so different.
you seem to have turbo's in the blood, the only way your really get to understand if you can "live with a zed" is to spend some time in one. There are loads of members all over the country, there should be someone local to you who can give you some passenger time, maybe even a drive. should reduce your travel and time issues, and help you make the choice.
also when you say "gone from a powerful turbo to a zed" i don't know any turbos that aren't powerful. in their own nature they boost the performance of what ever they are dropped into.
i know my zed has quite happily out pulled a couple of scoobies and an evo going down a dual carriage way. the zed isn't a slow car, but it does give off that feeling when driving. the speed is very deceptive in the zed. its by no means a super car and i'm well aware of this. but it is very accomplished at what it does. for driving pleasure alone, it is extremely rewarding. not everything is about power. (can't be arsed to find a pic of jeremy clackson shouting POOOOOOOWWWWWWWWWWEEEEEERR!!)