Brake upgrade?

Hello

Ive had my Golf mk1 citi serviced due to my brakes being slack but he said that there is nothing wrong with the braking system itself. He said it may be worth upgrading my brakes.

Atm I've got the original standard brakes and have BBS RA's 14" alloys.
Can anyone give me any advise on what brakes would be best for my car please

Kind regards

Max