When shopping for gas logs, the first choice you need to make is whether you want Vented or Fent Free (also referred to as ventless) gas logs. Vented gas logs are more realistic while vent-free logs provide more heat. If you do not know which to choose, there are other important differences you can learn about here:

Vented Gas Logs
Vented gas logs produce the most realistic looking fire but must be burned with the damper open because they also produce smoke
Vented Standard Vented See Thru
Vented - vs - Ventless
Not sure which one to buy? Read about the differences between vented and ventless gas logs or read our Gas Log FAQ's for even more details.
Vented -vs- Ventless Gas Log FAQ's
Ventless Gas logs
Ventless gas logs produce the most heat but are not as realistic. They do not smoke and can be burned with the damper closed
Ventless Standard Ventless See Thru