Have owned 3 of these, and never owned another car. '86 base, '88 GTU and now my '90 Turbo II. It's a beautiful car on the outside with that perfect sports car look, but nothing too radical that will end up looking dated, even now 20 years after the design inception. The handling is top notch, and with a simple plus size tire and wheel upgrade the next time you need new tires you'll stick to the road like glue. Comments abound on the car, and most people can't believe it is a '90. It's funny how many people think the car is only 5 or 6 years old. Grab a turbo if you can, they are most definitely the most fun of the different versions. I'd love a convertible for the summer.
Handling, top end power, and exterior design. The low weight is also nice, and the car is comfortable enough for a daily driver. Interior is laid out well. With basic care the car will last a very long time.
Sunroofs have issues with rust. If you get one without a rusted sunroof I suggest getting it painted / primed underneath. Some minor electrical issues with switches, but nothing major considering a 15 year old car. Replace any exhaust parts with stainless. These cars tend to chew up exhausts.