I've owned an 88 XJ for about 20 years, and as it moves into retirement I added a 2001 Tacoma 4wd DC to the fleet a couple of years ago as its replacement. I thought about an 80 series, and still check the classifieds.
Things that affected my decision include:
1. Exterior size. I like the smaller footprint of my older Tacoma vs the newer ones or a vehicle like a LC 80. More like my XJ.
2. Open bed. This is a real mixed bag. Having an open pickup bed gives enormous flexibility hauling stuff. The engine from my 1962 Triumph wouldn't have fit real well in the XJ (or LC), but the DC is perfect for this. Dirty and bulky stuff are no issue. But I gotta admit I'll miss the closed rear on the XJ when I sell it in the next few months. For travelling with a bunch of stuff a closed back can't be beat for security and weather protection. Yeah, I guess I could get a bed cap, and may when the Tacoma gets into serious expedition camping. I'd probably go for the LC if/when this becomes my main goal.
3. Aftermarket support. About the same. Great options for both.
4. Economy. Edge to the Tacoma, but not by too much. And the 3.4 L in my year doesn't punch in its weight class, so the economy/power balance isn't impressive. 24-25 mpg would be a dream.
5. Reliability. Bulletproof both.
You won't go far wrong no matter which you choose. There's been a Toyota pickup in the family since at least 1981, so I'm a big fan.
Don