So you think one tablet is the same as another? I did get to pick up an HP tablet with WebOS a few months ago at fire-sale prices (mostly out of curiosity, but also to give my son a Flash-based platform for BubbleBox.com games). You know what -- he hated it. He said, "Da, I can do without the Flash games, I'd rather have an iPad." Well, Damon, maybe Santa will come through for you since your father dropped the ball.
Certainly others are finding that the Kindle is no iPad replacement. Can it be that the GUI on other tablets, designed by software people, just isn't up to snuff?
...few of their many complaints: there is no external volume control. The off switch is easy to hit by accident. Web pages take a long time to load. There is no privacy on the device; a spouse or child who picks it up will instantly know everything you have been doing. The touch screen is frequently hesitant and sometimes downright balky…
So what does this mean? Well, getting the interface right is at least as important as the hardware platform that the operating system runs on. Seems intuitive, but obviously a substantial challenge, nevertheless.