BasicAer is not needed anymore now that the quantum_info module can be used to simulate circuits. quantum_info has a more flexible workflow as you are not tied to the job/result interface and is nice for small circuit calculations. It is also faster as it bypasses serialization.

Operator(qc) (unitary) or zero.evolve(qc) (statevector) or zero.evolve(qc).probabilities_dict() (counts)

The only thing that BasicAer supports in addition to quantum_info is conditional operations I think, but I think that can be added too?