We had a 1990 base Miata in Mariner Blue (no A/C, no radio, no power anything) that lasted 12 years and 160K miles w/o any significant issues. That car was replaced by a used 1996 Black Miata with the pop. equipment package that we only got rid of to buy our first S2000 and it went for more than 130K miles before it left the family. Both cars were an absolute blast to drive.
I couldn't give a rip about people saying they're girlie cars and all that nonsenese. I don't think that other than the few times I got stuck driving them in a bad rain storm that I ever got out of those cars not smiling and while the power isn't impressive on paper, you could actually use those cars on the street witout risking your life, your neighbors life or going to jail for the rest of time.
That's the thing that people miss about these cars. They're very well balanced and as much as I love my NSX, when can I really use it on public roads? Not very often.
With the Miata... every trip to the gas station was a blast.