this is right
the free A7 offers useful features and i´m tend to use lite-c. c-script is extremly limited. always i´m coding in c-script i code like in c but then i wonder how some function do not work. then i see "not more than 4 parameters" for example.

but i also cant disclaim the features of my A6 Com (shaders, no watermark, ...)

i would use another engine (like irrlicht), but, firstly, there i have less experience and secondly i miss the comfort of Acknex (some features i have to implement by myself)