I spent a lot of time looking through 100s of pages on here, and went back and forth between which lift I wanted to pull the trigger on. I thought I had finally settled on the 4" Readylift but then after continuously reading negative comments on it and all extended leveling kit style lifts I pulled the trigger on the 4" Zone Off-Road suspension lift and I am so happy I did! It drops all angles to nearly stock and I have had no issues so far. Great quality parts and sweet ride! Little more pricey than Rough Country or Readylift, but if you're going to drop 40K+ on a truck a few hundred extra dollars for a quality lift is nothing. Also I am running 35x12.5"on 20" wheels with +18 offset (Nearly stock offset) and I had to do a bit of trimming up front. Just some things to think about when making your decision.