Is a low impedance speaker better than a high impedance speaker?

Episode 892 (23:16)

David from Mission Viejo, CA

David called in and got very geeky about the electronics behind speakers in reference to another caller to the show Saturday. All jargon aside, Leo wanted to know if a low impedance speaker is better than a high impedance one. David said low impedance speakers around 4 Ohms are used mostly in car stereos because there isn't as much voltage to drive them. Home stereos can have higher impedance speakers simply because there's more power available.