A general purpose OpAmp is just that, your general purpose first choice. If you know more specific information about your circuit or it's application, the. You

A general purpose OpAmp is just that, your general purpose first choice. If you know more specific information about your circuit or it's application, the. You can specialize. But general purpose OpAmps are jack of all trades with specific known weaknesses to avoid. In most cases, you calculate the error bars and none of the errors matter, so sticking with a cheap general purpose amp is best engineering.