Are you looking for opinions on which bump kit AND leafs or just leafs?
Personally, I would get the leafs, it really improves the rear performance. I regretted waiting so long to do mine. They are the best improvement you can do to the rear without upgrading shocks, especially if you do any off roading (judging by your Sig pic that's a yes). We highly recommend deaver leafs.
As far as bump kits, you can't go wrong with the SVC A.B.S. It gives you more bang for the buck than the other kits with its adjustability. (Stock leaf position, aftermarket leaf position, tow/haul position, etc.. All without changing out bumps) You can get the bump kit, and run stock leafs, then when you get deavers, all you have to do is move the bump can up 1 position and your good to go for the new leafs (5-10mins to adjust bumps).
Let me know if you have any questions regarding the SVC A.B.S. kit and deaver leafs, I'll be happy to help. I can also set up a package deal as well.
-Joseph Haynes