When buying gas logs for fireplace, look for:

•  Vent Free Gas Logs
•  Certified Vent Free Burners with Pre-assembled Control Valves and an ODS Safety System are standard in quality gas logs for fireplaces.
•  Custom Grates
•  When shopping for gas logs for fireplaces, look for easy to install Connector Kits
• Lifelike Glowing Embers
•  Burner outputs of around 37,000 BTU
• Gas logs for fireplaces should have a lifetime warranty
• The burner should have 10 year warranty
• All other parts should have at least a 1 year warranty
• Good quality gas logs for fireplaces have lighting methods like variable flame heights and remote controls.

Gas logs for fireplaces are convenient, and good quality ones look very real.  Do your homework and don't skimp on price.  Good quality usually cost more and in the long run is the better choice.