I've owned the 2002 Toyota Solara Convertable for 3 years now, and I still enjoy driving it, particularly around town, somewhat less so on the highway (especially with the top down, when wind noise can be tiring). For a convertible, you probably can't do better in this price range. I note a few rattles at high speeds, and lately the brakes "shimmy" when slowing from highway speeds, but I've had no mechanical trouble with this car-- just change the oil, rotate the tires, typical wonderful Toyota reliability.
Handling, acceleration, CD changer and sound system, visibility (with top down), relatively quiet ride (for a convertible).
Heated seats, passenger-side electric seats, better visability (with top up).