There's nothing like a roadster for excellent cornering and maneuvering, but I believe the Miata to be the best roadster I've driven. Had a Toyota MR2 Spyder prior to this, which I dearly loved, but the Miata is more refined - the steering and braking are like glue on velvet. In terms of comfort, this car is a great fit for a short/petite person like me. All the controls are easily within reach and I never feel cramped. Dashboard is great - traditional yet sporty - none of that crazy futuristic stuff. With major road bumps, you'll hear loud bangs inside the cabin, but you will also notice that road bumps will not bounce you or sway you in this car, like in other cars. It handles dips in the road with unbelievable stability.
The Mazda MX-5 "Miata" has always been the standard by which other roadsters have been measured by and still is. I got my 2008 Grant Touring PRHT recently and can't believe how much you get for the money. Luxuries such as seat warmers, Bose sound, and a power hardtop all for under $30,000. It's, of course, a blast to take out for a spin on twisty roads or even for highway travel. The leather seats and insulation of the power hardtop make long road trips more enjoyable (at least for a lightweight roadster). Sure, BMW, Mercedes, Honda and the like also have roadsters. The Miata, however, is unmatched in the driver-car connection department, as well as responsiveness and handling. In other words, you get a lot of joy and excitement just going under 45 mph in this little sports car whereas you probably have to redline the competition to get the same effect. On top of that it's reliable, good on fuel and cheap to insure. One caveat about this car is that drivers over 6' tall may feel cramped. This is sad because everyone, regardless of size, should have an opportunity to enjoy a Miata.
Such a fun little car. I look forward to finding an empty windy road whenever I can and just throwing it into the corners. The sense of confidence it provides and how solid and planted it feels in all conditions. Slowing down for a corner seems so antiquated now. I do have to think twice about making any purchase as the cargo space is extremely limited. Also the interior does get a bit loud on a rough road since with the convertible soft top you are basically driving in a drum. I don't believe there is such a thing as a perfect car, but this is as close as it gets. The few downsides are minor compared to all of the benefits such as Japanese reliability and the sense of fun this car distills in you.