Hello,
Both options can be profitable, depends of what you feel is more your style: get a few top models or lots of average one.
Each has it's benefits and it's downsizes and your experience, investment size, the city you will open are all important to take the good decision.
We choose the "few and good" many years ago and they become "many and good" in time but sometimes we still feel it would have been easier and more profitable to go for the "many" option