There have been a few around here who like the larger buttons. I think it's interesting that she'd had the 500 for most of a year and apparently hasn't realized that she can also turn pages with the big silver button, or select menu items with the number buttons ... unless perhaps they were simply ignoring those features because they would compare less unfavorably with the Kindle's controls ....
It's hard to tell if they were genuinely biased, or just really enthusiastic.