Guys, I am still at the "Build and Price" stage, and I have a few questions that I would only trust current owners to answer. How is the stock suspension? Is it worth paying extra for the Air Suspension feature? I see on the forum some guys have trouble with it, but what about the benefits? Does it give you a smoother ride on the street, in the dirt, or overall? Or is it just useful for raising and lowering the truck depending on terrain and function? Can you level the front with it, or does the whole truck, front and rear, go up or down at same time? I am new to the forum and want to learn as much as I can before taking the plunge. Thanks in advance!