Considering I bought my first 4Runner last Saturday I can't comment much from that side of the fence, but as far as Jeeps I've owned two TJ wranglers, five XJ Cherokees three WJ Grand Cherokees a ZJ Grand Cherokee and also currently own a 42 Jeep Willys & a 98 XJ, so lets just say I like Jeeps lol. They have varied from full blown built locked geared lifted caged machines to spacer lifted Grand Cherokees. My full body armored built 5:13 geared Rubicon was a FN' beast I also had a XJ of the same caliber.
I was a little more cautious with the XJ wanting to not destroy the body on it but it went everywhere the TJ did sometimes with more ease because of the longer wheelbase, The Rubicon on the other hand I'd bounce it off trees and rocks all day long It was an unstoppable machine.
I'd personally never consider doing any of the wacky stuff with a late model 4Runner, due to the size of the vehicle more than anything. But there is always that guy that has money and doesn't care. I've ran trails with guys that had build older taco's that did obstacles with ease that my Rubicon had to take more than one run at, but then again wheelbase comes into play. It more or less comes down to build quality of the rig and skill level of the driver, you can build the most expensive rig but if you cant navigate trails you will spend more time winching than anything. I always will like the older machines due to less tech and the fact that they just are more narrow and easier to navigate trails. I live in PA and most of the trails I ran were old mining, logging single track motorcycle trails and pole lines.
With all that being said I bought my 4Runner because I was sick of Jeeps. Always problems, mostly just annoying little stuff and the JK. Man do I hate the JK poser city everywhere. I'm pretty confident my 4Runner will last me well over the 100k mark with minimal problems. Iv'e already purchased the Truxxx 3/1.25 and am now debating between 275 60R20 or the 265 60R20. A real nail bitter huh! LOL! I have no intentions of making it a trail rig the most it will likely see is some dirt roads and fire trails when I go up to the mountains.
Closing statements which is better? I think it all depends on the intended purpose, for me where I live, pre 2005 solid axles as little tech as possible, geared, locked & 34x10.50 LTB Swampers I can make it go anywhere.