Well 2 answer your question, you have 2 test it yourself some people prefer lua and some DLL cheats. But in my opinion DLL is much better because its undetecteble, gmod is not under VAC protection.
There are a few things that can be detected from lua anticheats like CAC, for example bhoop if you do perfect jumps every time the anticheat will kick/ban you (I only saw that it happened by CAC anticheat).
But I recommend DLL buddy (BP).