Thanks very much to all for the advice.
I had series Land Rover fever (btw,
this is one that I was looking at/salivating over), and it was cured by...series Land Rover fanatics!
That says a lot for the level-headedness of the people here.
The Toyota Tacoma indeed looks like a much better truck for my purpose. Consumer Reports highly recommends every year since 2001 for reliability. Boring but reliable...that does seem like the wiser combination for a mission-critical vehicle.
(Oh, and re: off-roading in Yellowstone. Indeed, I do not plan to break those rules within the boundaries of the park. It's the less accessible areas in the same general area -- including private property with vaguely defined dirt "roads" that I'll be getting access to -- that I need a little extra clearance and traction for. Many property owners considering granting access ask, "What do you drive?" And "Honda Civic hybrid!" is not the answer they want to hear, as they know who will be the first call this idiot photographer will make when he gets stuck.)
Thanks again to all for the generous advice.