I have Traktor Pro3 Timecode vinyl and Technics carts (SL1200's) , want a loud timecode and I don't want the expense of buying new carts so what would be the best needles is it Stanton or some other make ? Thanks in advance.
Technics don't make cartridges. What you have are Technics turntables.
Also what you refer to as a needle is called a stylus. The stylus fits into the cartridge. The cartridge fits to the headshell, and the headshell fits onto the arm.
There's no single answer to what's "the best". It depends on your own preference and budget.
Google is your friend.