I have wanted an S2000 for several years and finally purchased one last spring. Owning the car is a little different than I had imagined, but not in a bad way. PROS: the car is absolutely thrilling, extremely direct/controllable with a perfect transmission and exciting 9000RPM engine. Great MPG (25-28), outstanding handling, very fun and agile. Makes every shopping trip feel like an adventure. It is a very special, hand built car and feels like it through and through. CONS: Terrible highway car - loud, obnoxious and buzzy. Very tight on the inside, feels great on a curvy road but not on the freeway. Burns 1qt oil/1.5k mi, but I drive it hard.
Engine, transmission, handling. This is all about the visceral sensations and feedback. Not a 'fast' car, but more than quick enough to get from corner to corner. Very reliable and cheap/easy to maintain. Hard to believe that I bought so much fun and excitement for the price of a Nissan Versa.
None - this car is exactly how it was intended to be. Would love an updated version, but i know that it will never be built. If you want comfort or compromise, look elsewhere. This is a sports car's sports car. The 2000 model intentionally left the clock out of the radio - that's how driving focused it was intended to be.