Its been documented a million times over the net that the mk4 golf is already at its limits at the stock suspension height. The control arms are already parallel with the ground. When you lower the car, you bring on unwanted positive camber, so when you go around corners at full speed it feels worse than it did with the stock setup.
It might feel 'stiff' and 'tight' at low speeds when your cruising through McDonald's drive through, but at the track it is useless.