Head gasket blew due to previous owner never changing the oil (not the truck's fault).
Blew second 1FZ-FE engine, again covered under warranty due to poor diagnosis by dealer (the fan clutch had died so the truck ran hot for about 8 months and eventually killed the #6 rod bearing).
Greatest truck ever made. Super reliable and built tough. This is no SUV, it is made for off road use although it also cooks down the highway comfortably blowing by other cars.
Only gripes are seats don't go far back (far enough for me, but I'm short) and bad mpg - although I didn't buy it for good mpg.
How can this be (in your words) 'super reliable' if it has already gone through 2 engines? I have never heard of a head gasket failure due to not changing the oil; they always fail due to overheating or poor design. As for engine failure no. 2, the temp gauge should have been reading warm and you should have noticed, OR the gauge read OK and once again a poorly designed 'stabilized' gauge was used in this Toyota which did not alert you to a catastrophic problem.
I would say get over the Toyota reliability hype and realize that indeed, 2 failed engines covered under warranty or not, do not describe super reliability. I would hate to be in a desert when your cruiser blows engine no. 3. And there are vehicles out there which drive nicer on the highway than your 80 series, but are still better off-road--the Range Rover, for example, or the Mercedes G-Class.
Good luck.