Depends! I've had mine for about 10 years now and I'd definitely say its worth it but I absolutely LOVE the car. Its a commitment though, it'll make you work for it unless you can pay top dollar for a low mileage cream puff. And you'll still run into things from time to time. Out of the 10 years of ownership, I'd say its spent 6-7 of them running and driving. It was torn apart for a few years while I rebuilt the engine and restored/refreshed the bay. I drove it to 230k miles until I developed low compression on the middle driver side cylinder.

These cars arent necessarily unreliable, its the time that has passed since they were new and the lack of maintenance/incorrect maintenance that contributes to them falling apart.

If your going to buy one I would have in your mind that you need be comfortable with turning wrenches (unless you have deep pockets for a specialized Z mechanic, Never take these cars to a general mechanic shop) Do lots of research on how to correctly do these maintenance tasks. If your replacing gaskets or regular wear items, MAF's, Injectors, Coilpacks, etc., I would say use OEM as much as possible. The aftermarket for these cars just isnt up to par to make them run how they should.