Depends what you want it for. My wife had a mark 2 16 valve and it was great fun to drive but that was written off and she now has a mark 3 16 valve. The standard suspension is shocking on the mark 3 but hers now has konis so it feels like a mark 2.
The mark 3 is a better daily driver but it doesn't handle as well and it isn't as much fun to drive. The mark 3 has electronic fuel injection so it's smoother & more reliable.