Sir A, that is an excellent list of assessments with strengths and weaknesses.
I'll add my vote to the idea of going out and sitting in some cars rather than trying to make a decision sitting at the computer. You can certainly make your list at the computer, of course... but then you will be able to start crossing things off of it just by sitting in them in the showroom. For us, the Element was crossed off when we realized it has only four seats, and the HHR has a wide running board that makes the step into and out of the driver's seat less hip-friendly than I needed it to be.
The point about leather seats being easier to slide into, made by Saf and TPL, is well worth noting.