Bought my white Miata w/140k miles on eBay. Excellent chassis. You wouldn't have a clue as in what a "good handling car" is like, unless you drive a Miata. Very forgiving near limits - gives you plenty of warning before it gives up. The car tries real hard to do whatever you are commanding it to do, and performs very well. Miata is nothing short of purebred sports car, designed from ground up to be impractical in all other aspect other than getting from A to B in the most exhilarating way. Underpowered, but don't afraid to rev it up to 5000+ rpm. The car soars when you push it hard. 27 MPG in abusive driving.
Delightfully balanced chassis and driving characters. Relatively good MPG. Designed with top notch reliability + easy maintenance. Cheap parts. Lots of knowledge on WWW - there are answers to just about all problems you can have in a used Miata.
Nothing really. Need room? Camry. Need 5 seater? Camry. Quiet Comfortable ride? Camry. No brainer transportation? Camry. As a 2nd car, Miata is nearly perfect!!