I run Skyjacker Black Max myself, mono tune, oil filled no nitrogen pre-charge. Problem with nitrogen pre charge is you have to overcome the pre charge before the shock begins to move and my truck rides hard enough as it is.
I had Rancho's and blew the seals out.. I run off road with a lot of suspension articulation so the shocks work over their full range and the Ranch's blew their rod seals. If I was really flush, I would have went to remote resivor shocks like Fox but they are oh so expensive.
My opinion (only) is Bilstein shocks are over rated.
No issues with the Skyjacker's at all.