My prevoius Jeep ownership includes a 1966 Waggy with the 327, 1972
CJ5 258 and power steering, 1973 Commando 304 Auto, 1977
CJ7 Golden Eagle 304, 1979
CJ7 258, 1983 Scrambler started with a 258 and ended with a 304 and 35's and I have driven numerous Wranglers of all generations.
When it came time to enter back into the Jeep world a few years back I had a similiar wish list as you, looks, history, reliability, pure nejoyment, low miles etc.
For me, the intermediates of 72 -75 are the perfect Jeeps. The body, with the exception of the rear mounted gas tank, 3 extra inches in the front fenders and hood is basically the same as from 55 on. AMC didnt change any of the tooling, so holes for floor mounted foot pedals, holes in the bumpers for PTO shafts, etc are all included at no cost. The engines are the reliable and somewhat modern 258 and 304's. The brakes are significantly upgraded over the earlier models as is the entire steering mechanism. There is plenty of debate of narrow track vs wide track, etc. but if you plan to keep an intermediate fairly stock with no lift and tires that fit it isnt an issue, Keep it as close to what the engineers designed and you will be as surprised as I am every day I drive it how well a 40 year old Jeep Runs, handles and brakes.
As for specific years. I dont like the 1972 because the clutch is cable activated and is prone to breaking. It can be changed out, but my memories of driving my 1972 back in 84 kept me away from that year. !975 went to catylitic converters and first generation electronic ignition. I'd stay away, but it is easy enough to replace.
3 years ago i purchased a 1973
CJ5 with the 258 and T14, 3.73 gears. It was a plow Jeep, all stock with 41k miles but hadn't tbeen registerd since 1981. The advantage of an old plow Jeep is most likely it hasnt been wheeled hard if it all in that 40 year span of time. Everything was original and all electrical and rubber parts needed replacement. The body still needs paint as it is original as well. Some parts are hard to find, but with patience the chase is worth it. All in I'm right about $5k including purchase price. I wouldnt hesitate to drive it cross country if i had to. No worries about breaking down.
Just my opinion.....