The main reason some go to Dominican salons is for the roller sets. In my own experience, I have found the Dominican salons to be the only way to go.
Often at Dominican salons, you will see women of every color with long hair. I have had many stylists as well as friends of mine saying that if you want long hair, go to them once a week for a wash and set. Several former friends of mine have been going once a week for years and they have hair that they can sit on.