Scan tools

I got a harbor freight one with live data about 6 years ago for xmas and I have never needed more than that. They dont make the exact one I have but this is the closest current one
ZR8 OBD2 Code Reader with Live Data
The scanner with ABS costs $120 but I have personally never had any ABS issues with any of my vehicles
the live data is interesting and has made it easier for me to find issues with sensors more than once