One rake nobody should be without is a shrub rake. Shrub rakes are great around bushes and shrubs, and in tight spots where a larger rake won't fit. After having done a dozen spring yard cleanups, I feel qualified to say that a bigger rake isn't always a better rake. You could end up covering less area because of the pressure necessary to keep all the tines on the ground. This could cause premature fatigue of the operator.
There is no "right rake" for all situations. The best course of action is to have a few different rakes to handle the situations you are most likely to come across.