Wifi is nice. As for kinnect i wouldnt use it really.. if i wanted a sensor movement console i would of got a wii. No need to upgrade from the normal 360 to this IMO.
By the way, that Kinect thing looks good but I reckon that guy who has to hold his arms out as a "steering wheel" would just ache and piss you off after a while. I reckon the game play will be wank... just like the Wii.
I like the slim version. Though it does say clearly on the front that if the system is vertical and goes horizontal or visa versa it will devour the disc inside. On the first one it was just a warning, on the new version they made it worse and it has a sticker on the front saying "it will ruin your disc." That said i think they should have gotten with the times and adopted how the wii and ps3 handle discs.
Yeah.. I had to have my original xbox 360 vertical for a short while, and in that time I destroyed 3 games. Had to borrow them from someone and install them on the HDD, and then it takes about 3 tries for the discs to be read.