I have looked and decided the Steadyfast system will be my choice for FW stabilization. Other common ones are the JT Strong arm and the Bal lock arm. Lots of information on the internet and long discussions on some of the other forums. The systems mentioned are not king pin stabilizers but rather retractable arms that mount to the frame and to the landing jacks.
Many people only use their auto levelers and are quite happy with that arrangement. Not having that luxury and not wanting to spend a the money for that luxury at this time, I looked for a stable alternative.
Steadyfast claims no other stabilization is needed with their system and it will be the easiest to setup and take down because there are only 3 arms and the locks are more conveniently located. Lock arm is the least expensive and they recommend 6 arms and Strong arm is close in price to the Steadyfast and 5 arms seem to be the best setup although many use less than that with good success.