I put timbrens on my 2016 3500 drw Ram. So far so good. I’ve got at 19k 5er toyhauler and was having about an inch more squat than I wanted. Yes airbags would have done the trick and would been more versatile. However. I wanted a hands off solution which timbrens are. For an automatic airbag system with pump and install, you can easily go north of $700. The timbrens achieve the extra lift I was looking for and help stabilize side to side jarring. Just don’t assume they are going to solve a suspension problem. They are there to help an otherwise health suspension.
It’s important that they don’t sit more than about 1” off the axels or they won’t engage soon enough to be beneficial. Also, too close and you will have a rough time unloaded ... 1/2”-1” is correct for these ... on the ram 2500/3500 at least.