Depends what you're looking for and what you hope to find.
I'm sure you know the basics of Benidorm - there are beaches, a lot of British tourists (and some other nationalities), some Spaniards, it's hot in the summer and very crowded, a lot of older people holiday there in the winter and has a fair sized foreign community living ther.
If you want a lot of people, very hot summers and a lot of Brits, English spoken in most places it could be where you want to be!