This is just a sweet combination of lighting and coloring tools that render fast. Ideal for creating contemporary moods, adding post ambient lighting effects, "memory" sequences or historic looking footage, LightKit is worth the $49. The worth comes from the common-sense ease of use and integration items. Really, everything is just right-sized for so many needs.
We all have overlap in our plug-in toolsets - it's inevitable given the narrow range of variables within our host applications. However, what makes this plug-in shine is the packaging of these elements into a smart, bite-sized tools that are easy to even remember to use in the first place. Honestly, it is possible to get these same effects with several other plug-ins available as well as crafting them yourself from stock tools that ship with our programs. This just makes it easier, faster and targeted to "real" usage. LightKit is a new favorite.