Good advice to say away from delray and stay east of 95, you probably want to be on A1A/collins or a block away from that road.
Just about anything on the coast will be good. Ft Lauderdale down to Miami has a vibrant nightlife, restaurants and culture, the beach in Ft Lauderdale gets packed out. There is a lot to do. Its a good singles, couples place in my opinion.
You should look in to Melborne FL, its about 45 mins south of Orlando, its a quiet beach town that has been getting developed recently. You can get a house on the beach or river for 2K a month. If youre on the river you can rent a boat, jet skis and just take off from your house.
South Florida is great, one of my favorite areas, but its like a lifestyle to live there, therefore everything is a bit more overpriced, and what isnt, is usually not nice, or good. places like Melborne, Marco Island, Naples are nice, good food, with less of the partying like south FL