Monotube is better. Not sure if the bilstein 4600 series is available but that could be an option. However on my gen2 I have the rancho 9000 and can dial in whatever ride you wish. I have them cranked to highest setting but you can soften it up if you want depending on wheel and tires. I am back to all terrain oem so firm feels best with this set up. And I have the quicklift set up too. So new springs as well. Rides much better than my 2013 f150 I just put 4600s on the back of that one last week.