Harley is a classic 1920's art deco design. It is my second favourite.
Arthur Price is a top quality (high price) manufacturer. That particular line is I think made in a Far East factory to their design and specification.
your set is 18/10 stainless, probably the best all-round material, and will keep its shine and colour better.
The AP cutlery is a more heavyweight construction. In particular, if you compare the knife handles to other brands, you will find they are fatter and fill the hand better. You will notice the other items, especially teaspoons, feel heavier than usual.
A very good choice though rather expensive. If you can afford them, no problem.