The third row seats of the 80 series are great if you have a big enough family to warrant it, or want to take your family plus kids. Safety aspect of the 80 is also probably better. 80s seem to deal with salt a lot better.
I had a 60 and liked it quite a bit, but mine was too down on power to be practical. I never looked into that. I did do a knuckle rebuild on it, although in retrospect probably didn't have to. I did get a lot of practice with balljoints that way!
Around here, the 80 is honestly a little bit big as a trail rig. But it depends on the roads and what you're doing. It makes a great, durable daily driver for gravel roads that would tear up other suspension setups.
The 60's suspension is not nearly as good, but it's still capable. And it's a little smaller. The split hatch/tailgate setup is fantastic. We have problems with regular hatches (4Runner and Sequoia) around here. They seem a lot more failure prone.
I do like having a manual. One option is to get a FJ80 and do a manual sway. You can do the same with the FZJ80.
We have a FJ80 and a FZJ80. We're thinking about pairing down to one. The FJ80 has a good motor and it's competent on the highway. It's not exactly a rig you pass cars with, though. I tow single axle trailers with both of them. I prefer the FJ80 and my wife prefers the FZJ80. A lot of that comes down to cloth vs leather, but also the paint.
The FJ60 is definitely more of a classic. I could never be happy with a FJ62 with an automatic, personally. I'd rather just have an 80 series. My FJ60 threw a main belt on my first drive. I found out that the accessory belts fit the essentials, so I was able to keep going. It was a $3k project rig. I do regret selling it, but the circumstances at the time made some sense. I moved to a place with emissions testing, and didn't want to deal with keeping a carbureted vehicle passing.