Scratches and shine

The boys did a great job on the car wash today. My wee motor is gleaming again. That is except for some annoying fine scratches. Others aren't always as careful as I am. So took myself off to buy T- cut. How hard can it be ? Why do manufacturers have to supply a range of stuff they never had or we never needed 40 years ago?
On the shelf was black, silver, shades of blue colour repairer and then I spotted it... Original. Why have it and the others? I didn't need to indecisive. Original was good enough then and good enough now! And it is! Car all sparkling now!