Question regarding gas log sets?

The type of log set and burner used determines if it is vented or vent free. The vented gas logs more closely resemble real burning wood by producing a yellow flame versus the blue flame produced by vent free logs. However, they produce that yellow flame because they do not burn as efficiently so vented logs do not generate as much heat and they produce smoke and soot so you will need to periodically clean your chimney. You should use a gl fireplace door insert just like you should with a real wood fireplace to keep the room heat from going up the chimney. If you are looking for a real looking fire then the vented logs are better for that. Vent free logs are the better choice for heating a room. However, there are indoor air quality concerns with the vent free logs so some people recommend you not burn the vent free logs for very long at a time. You should probably research that more before you choose.