Generally we find that eRigs and eNails provide regulated temperatures and smooth heating and cooling which allows you to place a terp pearl in before you power up and leave it in until you're ready to clean. For an e-Rig with powerful induction heating and a large dish such as the Dr. Dabber Switch 2 we like larger 5mm or 6mm terp pearls which retain tons of heat allowing you to drop temperatures ridiculously low. For a more portable option like the Puffco New Peak we prefer a 3mm ruby pearl (or 2 or 3) for maximum movement.
When using terp pearls in a banger it's important to make sure you have swirling airflow to get the maximum benefit. Some quartz bangers have directional air slits in them while others rely on the carb cap for the air movement. No matter what quartz nail you're using, we like to test our setups out at room temperature to make sure everything is functioning perfectly before we break out the torch.