I've never been in a 100, but I imagine with the IFS and v8, it's a lot more fun to drive on a daily basis than an 80. I actually like driving my 40 more than my 80, but that's due to 300hp.
It's not just that it's more powerful or softer riding; it is both of those things.
The cabin just feels less cramped. I don't think it's physically that much more space, but the second row seats, for example, have ample legroom. In the 80 they don't.
I dunno, 30 minutes in one would give you all the impression that you need to realize creature comfort wise it's very different from the 80 series.
Rear seat legroom in an 80 is pathetic. They should have said fxxx the 3rd rows and moved the back seat back about 4 inches. The power in an 80 really sucks, as well.