One fuel is not better or worse than the other. Our suggestion is to first decide which fuel fits your lifestyle best and which fuel you would prefer to use.
If you have a nearby source for wood and have the equipment and time to cut, split, haul, stack and dry wood, lots of money can be saved by heating with wood. Wood requires regular and routine maintenance.
If you’re not the type who wants to get your hands dirty and are looking for heat, a gas fireplace will be a much better decision than wood. The size of gas fireplaces and their heat output, varies considerably from model to model.
If just a little supplemental heat is needed in a room and/or you want to use a fireplace year-round, an electric unit might be your best bet.
Two other very important considerations are the location of the fireplace in your home and the venting (for gas) or chimney (for wood) requirements for the appliance.