Yeah, I own a 180 man. They aren't riddled with problems at all, I just have a habit of breaking things! My car is pretty highly modified, so I am constantly finding the weakest link if you know what I mean. I doubt I will have the same issues next year as I will have sorted every issue that has cropped up, as well as any other I can conceive happening.
If you're happy to keep it stockish then I'd hazard a guess you won't run into as many issues, but it is near on 15 years old so problems are bound to occur. I'd go for an S14 if I were you.
Greg makes some good points too. To have a race only car means somewhere to store a trailer, a car that can tow etc. I bought a daily that could tow for this very reason, but I have no where to put a trailer, and I haven't got a towbar yet