I have 2 60 series, an FZJ80 and a 100 series. The 60's ride like covered wagons (leaf springs), the 80 rides like a 90's era truck and the 100 rides like a Bentley. In completely stock form the 100 can go further, in far more comfort, and any of my other LCs. If I get somewhere I need a lift, I hit a button and I'm 2.5 inches higher. Once I'm going over 18mph it will automatically go back to the normal ride height (saves the CV joints). It's a 2005 with the 4.7L (million mile engine) and has ATRAC, which is the electronic traction control. Point it up a greasy hill and hold the revs at 2K and listen to the computer work out the traction, applying braking at each wheel independently. I've walked up hills where I could see others spinning and sliding off.
Oh, and if you really must have a solid axle rig front and back, in a few years you can import the 105 series from Australia. I just got back from down there and there are hundo's coming out of the woodwork.
I will concede that the 80 is built tougher, overall, than the 100 underneath. But that's really nitpicking. I have the 80 setup for off grid camping for extended periods.
As for the torsion bars, they work fine. Lots of vehicles still use them. I would argue that the comment that they are 'lazy engineering' is not only comical considering the pedigree of Toyota. I have never, ever, heard of a torsion bar problem. Did you know Formula 1 uses torsion bars?