Guys, this one's such a no brainer that I shouldn't even have to lay it all out. But I will. The Nokia Lumia 900 is an excellent handset, comes packed with a fresh new operating system in the form of Windows Phone 7.5 Mango, and thanks to a nifty AT&T bill credit from Nokia, you can essentially get this $100 LTE-equipped phone for free until the 21st. Repeat: for free. Like I said, this one's a no brainer.