Gardner Street. Its bohemian feel with Vegetarian Shoes and Komedia etc might not be to everyone's liking but it is a vibrant part of town now, whereas rewind to 1991 and it had the Jubilee Shopping Hall where Komedia now is and was deserted.
But rewind back 22 years earlier and Gardner Street was a vibrant shopping area: I can still recall the smell of coffee being roasted in the coffee shop with the large roaster in the window. There was a shop that sold nothing but eggs and a shop that sold nothing but cork - it was far quirkier then. It even had one of Brighton's first supermarkets, at a time when they were a novelty.
I'm not sure that modern Gardner Street has quite the same feel.