Like I said before:

If you want a 2-seat roadster then get the S2000. If you want something with a modicum of practicality then get the RX-8.

Go out and drive em, pick which one you like.

You can *maybe* get a discount on the RX-8. I'm not sure how they're selling. If you're in a more temperate area then it's a good idea to buy an S2000 during the winter while convertibles are out of season. The dealers are more willing to haggle on the price to prevent the car from sitting on the lot for too long.