UPDATE:
I just got back from my Sisters. I dropped the key and automatic door opener with them and retrieved my Xbox 360 slim. I must say this system is super sexy. I am recovering my gamertag right now but my first impressions are wow. I love the different noise it makes when powering up. Also the power supply (brick) is a lot smaller, thank god.
The wireless network set up was super simple and asked to be set up as one of the first things when I powered it up. The one thing you have to love about the 360's set up is even a monkey could figure out how to get everything going.
Three things that kinda bummed me out:
1.) No HD cables...however it does work with both HDMI and old Componet cables from the earlier systems so I had both no big problem there.
2.) No Hard Drive transfer cable. For a cable I will use once it kinda sucks I have to spend $20 on it. However I am sure Gamestop will take it back for at least $10.
3.) No play and charge kit for the new controller....why not? They are super cheap. At least give me the battery I have the charge kit, lol.
Other than these three complaints it looks awesome and I love that its wireless. On top of that 250 gb rocks my world. Plus when Kinect comes out, just one cable instead of two awesome!