ThumbGen Lite is just a lighter ThumbGen :-) In order to help novice users to get into the ThumbGen's world a bit more easier we stripped down ThumbGen's User Interface and released the Lite version. Under the hood the two editions are completely identical, just that Lite has less functionality available to the user.
Ideally an end user needs a Lite version and a Bundle and he is ready to go and enjoy a full ThumbGen experience.
The standard ThumbGen edition is recommended for advanced users, template creators, themers or users with special needs (tweaks, fine tuning, etc).
Both editions will be updated simultaneously and their versions will be always synced.
It is recommended to avoid placing both executables in the same folder (despite working may create confusions).