Don't listen to the iHaterz (tm)
Buy one if you want one!
Personally, it doesn't do it for me at all... Performance looks too compromised for its size. Doesn't look like it moves the game on much from the iPhone or iPod touch in my view, except for in size. And then there's the fact the screen resolution, though ok for its size again, is only 1024x768... Who uses a computer at that res these days?
If you think it will work for you, why not get one... I just know it wouldn't suit me. Already have an iPhone, and a MacBookPro, and also a pretty decent spec windoze desktop too so just don't see the point personally.
Oh, and I'm not overly fond of it design wise either. I think they could have made it look a bit more "organic" (for lack of a better word), with more rounded edges and softer tones perhaps...

