Most of the dual cabs are similar as far as off road performance goes, except the HiLux has better clearance under the sills.
It depends what you want to do with it.
If it's mainly on road with LIGHT trail work the Navara would be the go. Better on road performance and comfortable interior.
If you want to do a bit more off road then maybe the proven HiLux will be the go.
The independent front ends on all will give better on road and dirt road comfort. Tho I have had problems with bush fixes when the rubbers go on the arms as they are pressed in. (They had to be oxyed out).
When the new Navara came out I heard of a few front diffs going. One was when 4x4 Aust was testing it for ute of the year (on an easy track). My girlfriend has a HiLux and blew the front diff in that, but I put it down to driver error!
The Navara has the best engine. The HiLux engine is good but not as quick. Not sure about the new on coming out tho.
All of the dual cabs run drum brakes on the rear except the Landrover 130. For serious off road and outback touring the 130 would be a good choice. Tho bad ergonomics would almost rule it out as a daily driver.
The best option IMO is a Patrol or Landcruiser chopped into a dual cab.
BTW I have had two dual cabs and have done lots of research into all the models. Now I drive a Patrol (maybe into a dual cab years down the track

)
John.