Caterham 7 - Absolutely superb, back to basic car - amazing chassis/driving experience (feels like you are doing 100 at 40mph with the roof and vinyl doors off
Ferrari 360 - Incredibly competent car with plenty of italian design and fantastically aural engines
MX5 - Forget the hairdresser comments, for less than 2k, very little to challenge this small engined, light weight, RWD toy.
Lotus Elise - Similar concept to the Caterham with a tad more practicality (one of my favourite cars to drive), incredibly pointy and accurate.
TVR Chimaera - An absolute devil, tries to kill you at every corner, back end will drift out in a straight line if you floor it, quick steering and pointy but obviously feels like a larger car than an Elise or Caterham.
Aston DB4 - Surprisingly good for age of car, but more about the experience!
Alfa 156/GT - I still enjoy this car over any BMW 3 series, very accurate steering, passive rear wheel steer can lead to some tail happy times (with the right power delivery),only real fault for me - uncomposed over potholes...overallit just has a feeling of absolute honesty and fun.
Not a Porsche fan, driven 2-3 various models and felt they were all wet and lacking accuracy.