C-Script is nice and easy, and harder to crash than lite-c. Personally i think c-script is better for non-hardcore programmers. I don't actually understand why Lite-C was implemented instead of something light but super powerful like Lua. I wouldn't work with Lite-C if you are starting, personally.

I think it is an add-on that costs more money, and it lacks the huge several year history that c-script does-- you can find c-script code here to do a million things.