Originally Posted by Daylan
So if I don't plan on going anymore than 4" with 33's I would be better off buying a cheaper lift with only the lower non-adjustable arms and disco's than I would spending more for a kit with front and rear uper and lower adjustable arms?
Depends on what your goals are. If you just want to flex off road, there will not be a substantial difference whether you have adjustable control arms.
What the adjustable arms do is allow you to dial in your suspension angles. This will decrease bind in the suspension while you are flexing and put far less strain on various components of your rig (e.g., U-joints, control arm brackets, driveshafts, whatever). The biggest area I think it makes a difference is on road handling and ride. Having everything aligned properly is good thing when following a winding road at 70 mph.
That's my naive, inarticulate take on it anyway.