As for you not trusting gm, well that's simply you falling victim to your bias. The fact is modern ford and gm and ram pickups will last just as long as Toyota stuff. You complain that gm's Colorado isn't heavy duty enough for you. Gm puts out a pickup with a boxed frame, Diesel engine while toyota's mid size pickup is still using a c channel frame with a gasoline engine transplanted from a passenger car. Gm's pickup has more in common with the hilux (which you think so highly of) than does the Tacoma.
I'm a Toyota fan too. But i don't let that preclude me from admiring other brands when they put out something good.
Like I said, trust must be earn. It is ok to be bias based on personal experience.
GM has a long way to go to earn that trust with their past track record. Not saying the Colorado is a bad truck, it is pretty awesome that are offering what people have been asking for years,
however we'll have to wait and see if it can go the distance, right now we can only speculate. You can read reviews all you want, but until we get a lot of these trucks with actual high miles on them, then we will know. Guessing they'll be like the fullsize diesels, will need expensive repairs to keep them on the road, when the milage gets up there. Turbos, fuel injectors, fuel pumps, DEF systems. If you trust them, hey go right ahead buy one, it is your money. Me, I need more proof. Can pretty much guarantee that if I bought a brand new Toyota today, that 15 years and 300K miles from now, it will still be on the road, and very little fuss getting it there.
Box vs. C-Channel. yep neither the US Tacoma or the Colorado has enough payload for me and what I want it to do [haul a FWC,
well...], they are pretty much rated the same, even though they approach it differently. I don't care how they do it...but it would be nice if they bumped it up to what their oversea's counter parts get. It will never happened since that US market use trucks as play things. I live in a area that trucks are kings, rarely see them loaded down, other than commercially owned. The US pickup has become the family station wagon of yore. So why have a decent payload if the majority of people will never use it?