I think it handles curvey roads better now than it did with the 2.5" lift springs and no sway bar. We just made a trip to a trail run and my wife gets carsick easily. The road we were on usually makes her sick, and it didn't this trip. She used to hate riding in the blazer on that road.
Like 383 said, I think it's the blinging shocks that make the difference, especially on the street. Here's the article I wrote that's posted in the Product Review section:
http://www.coloradok5.com/custom-doetsch-tech-shock-install.shtml
I don't have any trouble with the front diving under hard braking, either.
I did keep the 52" spring pack completely stock, same number of leaves, overload, etc. Suspension droop is great, but it can go too far. I'm very happy with how they work. I've seen too much droop and axle wrap create problems on other 52 setups. I still think mine flexes just fine.
I have the bumpstops setup to contact just at the point the springs start to reverse arch. Before they would go quite far in the reverse direction. I RTI tested before and after the bumpstop install and the stops didn't hurt suspension travel.
I was also careful to make sure my caster angle stayed within a reasonable value. I had a hard time finding the correct number, but I think I ended up with 8° IIRC. I made the front crossmember to drop the hanger 1.5" and ended up with 6.25" shackles in the rear which are just long enough to keep the spring eye from hitting the frame on compression.
Hope that helps.
