Aftermarket gives you the capacity to retune to suit your desired fuel and ignition curves to compensate for modifications.
4A-GZE ECU will probably give more polished results on standard engine.
When considering the cost of each unit consider also loom and sensor costs for the aftermarket unit (if not supplied). Installation and tuning will be extra. If the ECU units (4A-GZE and Wolf) are available for the same price the 4A-GZE will be cheaper to set up and install.