Im looking at the level look rather than off road performance. Having the ability to have off road still essential. What package has a smoother on road ride? Fox, Icon, Falcon, Billstein, or Boss?
It's probably a toss-up between either Fox and the Falcons. The only issue with both of these is that they only add up to 2" of leveling, which still leaves you a smidge of rake. Technically, 2.5" of leveling gets your truck closest to a dead-level stance. If you're fine with 2" of leveling, then Fox or Falcon are your best bets.