I drive a lot of sports cars in my job, and although the Miata is not all that fast, it pegs the needle on the fun gauge. This is my second one. Its light weight and excellent suspension design make it a great ride in the twisties. Add the availability of hundreds of inexpensive aftermarket upgrades, and you can tailor your Miata for everything from daily driver to track-day monster. I use mine as a weekend fun car, not a daily driver. The other big plus is the reliability and easy maintenance of a Miata. They are so simple. Simplicity means there isn't much to go wrong, and when something does go wrong, you can often fix it yourself rather easily.
Excellent and precise handling.
Even with the Bose system, the audio is pointless with the top down at more than about 40 mph.