Love the form factor, love the download approach, love the vastly improved release schedule, but...
TWO HUNDRED AND FIFTY SMACKERS!
I know, I know, the UK price hasn't been confirmed yet, but even in Euros, that's a very hefty price tag. That's a Nintendo Wii in Germany, or nearly two Xbox 360s. I know it's not that much more than an iPod touch (219 euros), but the DSi is considerably cheaper at 150 euros.
Foolishly, it'll still be a day one purchase for me (LittleBigPlanet leaves me little choice), but it will be a grudging one.