Last generation Hilux (w/ 2.8l diesel) is my favorite Toyota "pickup." I'm not including the Prado's and LC's in that category. Awesome low-end torque. Very comfortable seats and driving experience. Small (tacoma-sized) external dimensions, but 1/2 ton capabilities (at least in terms of payload). Looking at frame rails and chassis components on that thing: everything just looked beefy and overbuilt, much more so than what you see on North American midszied, and even some full-sized, trucks. Spent a week or two driving hundreds of miles in that truck over roads which are far more rough than anything we have here in North America...I was more comfortable driving that thing than I was from driving my 5th gen 4runner for long stretches on smooth highway (granted my 5th gen's seats are not very good).
If we're talking strictly North America: current generation Tundra, no question about it. Great engine, good-enough seats and cabin comfort, great offroad focus (approach/departure angles, ground clearance, shock placement), decent range (w/ 38 gallon tank), well-built interior (few, if any rattles). And to be totally subjective, I think it's still the best-looking 1/2 ton on the market, perhaps except for the Raptor.