I am running my slash pretty much stock. I have changed the motor and ESC and shock oils but thats about it.

(hobbyking) turnigy ESC advanced timng to max 26.5
ballistic 10.5 stock timing at 30
86spur/22pinion
40F/50R
front shocks in stock lower holes (inner)/smallest spacer
rear shocks in 2nd from the end(closest to wheels)largest and mid spacer
1deg toe in in front/-2 camber
-2.5 camber in rear

The tracks I run on have large jumps so thats why I went stiff in the rear to stop bottoming out. Also they usually water the track before heats so it becomes high traction clay.
This setup has worked very well for me so far with very little traction roll.

I am planning on moving the front shocks to outer holes and I am thinking of putting in thicker front oils because I am still getting a little to much chassis roll when I enter a corner a little to fast.

here is a video of the truck with the setup without the changes I want to make. At about 9mins the camera zooms in so you can see the front suspension react on entering corners. I get marshalled a bunch in this video so bare with it. High winds that day and just me driving like crap. I did take 3rd though. They were racing 4x4 with 2wd that day so those really fast trucks were 4x4.
http://www.youtube.com/watch?v=R6na8VjYhf4