Okay, here goes...
The G has a special place in my heart. As a young man in the late 80's when they were only available in the grey market, I saw one driving on the highway into NYC at a time when I wanted a Jeep. I just loved everything about. Probably the same way some love the Defender. In 2002 when I had an Mercedes ML, I met up with a group of Gwagen aficionados who introduced me to the gentlemen who was responsible for the Gwagen project early on. We went on a camping trip into Death Valley. At that time, I swore I would own a G. A few years later I purchased a 1985 SWB diesel. With 88hp it was borderline dangerous on the highway. Semi-trucks would pass me on inclines. I had 6.17 gears and 35 inch tires. The truck had no AC and I loved it for a time but decided I wanted the 4 door version with more power. A little while later I purchased a 2002. These had some early electrical gremlins and mine was no different but I still loved the truck. Eventually I upgraded to an '05. I sold the '05 to fund the purchase of the brand new LR4.
The LR4 is like a modern car compared to the 463 (internal code for my generation G wagen). The ride is night and day better in the LR4 from a comfort standpoint. The steering is much lighter. The interior feels roomier from a width perspective. You have proper cup holders. The rear seats fold completely flat (in case you want to sleep inside while camping) and you have 3rd row seating. One of the reasons why I switched to the LR4 was because we just had twin girls and when I drove them in the G, they're heads would literally vibrate on the highway while they slept. The LR4 engine and truck overall feels quicker off the line and passing on the highway. The G by comparison will feel sluggish. For an everyday car, I could see why people would prefer the LR4. I did...
You can do some research on what the G achilles heels are, for me, aside from the window regulators, paint chipping off the mirrors, a relay for the TC. Everything else was pretty bullet proof. If you're thinking about buying a G with over 100K miles assume you'll need to change out the bearings on the front axle. Back in the day an independent shop would charge about $2k if I'm not mistaken but it is a job someone handy can do on their own. Lots of guys have done it themselves. The engine tends to seep some oil in the back of the block but they can usually run like that for years.
What else would you like to know??