My truck had a factory Revtec 3" lift on it when I bought it. ~6 months ago Chris4x4 put OME springs and 5100s all the way around. The AALs I had were not the right ones so I just sold them and continued on with blocks in the back.
Last Monday Chris helped me install the correct AALs.
After going 13 months with blocks in the back to having AALs in the back; the difference is like night and day. The rear suspension is so much more smooth than it was before.
The front set up is still a bit stiff, + blocks in the back made the ride almost too choppy (especially for my wife..).
Now the AALs are in, the truck rides at least 50% better.
So to all the new guys I would say, don't get blocks in the back, get AALs!!!