Mine is an un-hacked week 40 16gig unit. Love it. This is my first-ever Apple hardware device. I'm thinking of eventually upgrading to an iPhone once they come out with a faster Internet connection, better camera and - most importantly for me - a bigger storage capacity (8gig is too small for me since I use the device to watch recorded mpeg4 TV shows).
I got a week 39 iPod Touch, and I think the screen has a very little bit of that negative black screen problem... (caused by 1.1.1) and the WiFi sucks.