Well, if you hold off long enough asking for other opinions, someone is sure to come along and take up that other opinion. It sounded like subjective BS without any specific details, like "poor quality".
It does sound like you're trying to justify the Toyota, you don't need to put lipstick on a pig to kiss it, just kiss it and you don't need to kick the mule to love your pig.
I'm done with vans, 6 different ones, it's your turn to suffer. Only had one AWD Astro, would rather have that than the full size Ford's, Dodge's or Chevy's.
Years ago I did investigations, that included surveillance and hard driving. One target was a female with a Mitsubishi sports car thing, v-6, she'd hit 80+ in K.C. traffic, I was in my Astro, she never lost me.
All manufactures build a few lemons, that needs to be considered when asking for opinions about any vehicle.
Now, if this thread is just for jaw boning about vans and not really for serious comparisons, that's different. But if you want to research these why not go to specialty forums for these vans and see what owners have to say?
There are forums all about Astro/Safari vans, probably not much on the HiAce, it might be in a sub category on a Toyota forum, that might tell you something too.
In the end, buy what you like and be happy!