If you are on a budget you can get CitizenHack. Its reliable however it can be detected in literally 4 lines of code. Meth is ok-ish. I hear it has a lot of variety, so for the extra few $$$ you can get esp colors and stuff. If you have the cash though I would recommend Aimware. The aimbot will utterly shred people, but again its a big price.
and just to clarify citizen and meth are currently detected on big darkrp servers by glorified anticheat regardless if they claim they are undetected for however long.