No need to get your knickers in a knot lads..... opinions are like arseholes, n all that
A Commy or Falcon won't tow my boat up the beach, nor can they pull it up a slippery ramp, nor are they rated to tow a heavy loads like my race cars, and I can't carry all my **** in the back.
No doubt a Nav can be improved upon with aftermarket gear. But in standard form, it's hardly a paragon of off-road ability. YES, I agreed the issue of it not holding 1st down hills is a failure if low range decents are your operating circumstances...... I'm not new to off-roading, having owned many 4WD's including twin locked 'Cruisers etc in the past; assumptions about people's experience aren't wise.
What I'm saying, is I chose the 550 because it does what I want it to superbly. I researched long and hard prior to purchase, and knew it would be the best of the bunch for me.
Maybe you guys should have researched your purchases too?