I'd like to use one before I pass judgment.
Specifically, I'd like to carry one around for a week & see if I liked the form factor, it just doesn't fit with how I use my iPad from just thinking about it, I feel pretty cramped using the HD2 compared to the iPad, although the expandable membory would be nice.
I guess the minuses for me would be:
1.)  Non Gingerbread Android tablet from a company that's notorious for being slow to deliver OS upgrades.
2.)  A non user replaceable battery (at least not as easy as a non-Apple device)
3.)  the 7" size isn't a lot of real estate compared to the iPad (~45% of the iPad's screen)
4.)  The data plans seem a bit pricey (I do like that they're no contract prices)
5.)  I really want to see how the GPS behaves.
Price is pretty fluid, I can see some discounts coming if it doesn't sell well.
I guess being the cheapskate I am, I'd rather get a refurbished iPad for the $...