I’ve found grip to tip length to be one of the most important things for me. I’m using a JBC T210 handpiece and the distance from fingertip to soldering tip is under an inch. It’s like that stock photo with the “technician” in the purple shirt holding the heater barrel of the soldering iron, but it’s still the handle. Extra fine control of the tip with such a short grip. Since the heating element is right at the tip, it doesn’t need a lot of power to do the job, and it’s comfortable to use like that.