I think sammy springs are going to be almost too "light" for our heavier trucks, that's why I went with YJ's. YJ spring rates ARE soft, as a matter of fact, that's what a lot of Sammy guys claim when they put them on their trucks, but they like it because it gives them lots more flexyness.
We didn't go with any antiwrap devices in the rear and we ended up paying for it in the end. Because of the Kicker 3, and the 4:24 calmini gears in the Kick case, we have a LOT of torque. We ended up turning our rear springs into S's, (ruining them) and being that I had to drive the truck as a daily for a while until we could start working on it, we ruined the back ujoint yoke. so in order to fix that driveline, a new yoke would have to be put on it. Not just a ujoint. Plus we went through several ujoints. This also helped to create a "death wobble" (my truck would start to swing from side to side while in motion - very scary) which is also why I'm putting swaybars with disconnects all the way around as well.
I *highly* recommend an anti-wrap device, to prevent this problem. And stiff springs are only stiff for so long.
I am going to install one for sure.
Heather