My NB Miata is now 15 years old, so realistically my next purchase will be something to replace it. Not that I'm in a hurry to get rid of the Miata, as it still runs well and is lots of fun.
I'd like to think I'll eventually replace it with another fun car. Something small, nimble, responsive, sharp handling and reasonably good on fuel (4 or 6 cyl.).
I suppose I could replace it with a newer Miata/MX-5. The new Scion FR-S/Subaru BRZ looks interesting, too.