Another for the Currie AntiRock. You want a little preload on the front end.
www.jeepforum.com
This is an interesting topic. They only take into account traction but stability is also something consider. Even if you are hanging a tire that doesn't have enough weight to grab the surface (for traction) if it is on the ground or close to the ground the less you fall into something.
If you have lockers your useful flex can be increased, the article does address this but it is something that needs to be reemphasized.
Useful flex can go past where you get traction to before your spring falls out, depending on the situation.
How does it compare on road to a traditional sway bar? I have read reviews were people are not as happy with the on road performance compared to a traditional sway bar.