I actually got my computer exchanged at the Apple Store because the battery indicator didn't work. My replacement looks like it has better off-axis reproduction, but it as the has same panel as before so I do not know why there was a difference.
So right now it looks pretty good; about the same as my previous machine. As with off-axis glossy, other than a dark room, the problem is off-axis you're looking at a mirror.
Webpage:
Word document (100% zoom, 12pt Times New Roman):
No idea; it's Safari 4 with the latest updates.
In regular use, the temperatures are about the same; I did notice however that on this newer machine that the fans kick in at lower temperatures; before it would be maybe 85ºC before the fans spun up to 4500RPM; now they spin up when the temperature is at around 70ºC; more noise, but my lap isn't being cooked. And yes I do use my laptop on my lap.
The 15" is 128 ppi and the 17" is 133 ppi (I did the calculation for the 15", so I may be a bit off; but the idea is the 17" has smaller pixels still).