Drove the Z4, 350Z, Boxster S, Miata, and Sky redline. Went with S2000. Best car decision I've ever made. Loads of fun to drive. Very comfortable even on a 3-hr trip. Excellent build quality. Very usable trunk (w/spare). Top notch handling and accleration. I don't see any problems with lack of low end torque. You get two cars in one: Shift at <6k and it's a tame roadster, shift at 8k and it's a road hungry beast. Gets lots of attention (esp w/top down). I look for every opportunity to drive it. It's my daily driver and couldn't be happier.
The engine sound (intoxicating), seat comfort, ergonomics of controls, fast top, handling, and most of all- the best shifter in the industry
Remove need to have E-brake on to raise/lower top, better stereo.