It actually depends what you looking for.
For streaming and looking legit, i would choose aimex or phantom overlay, both are external cheats but phantom comes with HDMI loop feature while you cant really rage with phantom overlay if you are a rage cheater, but with aimex you can rage cheat and its accurate and unlike others i never had fps issues with aimex.
System Cheats, i never used them tbh, but i use AA most of the time, only using phantom overlay or aimex when i need to stream.