I own both a '92 and a '94. I will admit that I bought the '94 because the 3FE was too slow at altitude--I couldn't keep up with the city bus on hills in Utah (4000 - 8000 ft above sea level).
However, I also couldn't sell the '92. The lever operated HVAC system, bullet-proof engine, no rear spoiler, cloth interior, etc are all great features. It lives in CA now and at sea level it does highway speeds--even uphill. It also has an awesome stereo, courtesy of the PO.
The '94 has a bit more power, and a bunch of added features like ARB lockers front and rear, sliders, dual batteries, etc. Best improvement over the '92: it is possible to replace the oil dipstick after checking your oil without using sorcery. However I live my life in fear because I have the original head gasket and go alone to remote places (208K miles).
If you ask me what feature you want most, regardless of year: cloth interior! Lucky for me, both of my Land Cruisers have cloth interiors.