MS -
Like - Gears of War, Custom Soundtracks, Apps (UFC and VEVO)
Dislike - Paying for XBL, Focus on Kinect, overpriced proprietary accessories, the MS points currency system
Sony
Like - Dedication to exclusives, hardware reliability, free online, Blu ray, XMB customization options
Dislike - Longer loading times, Some very long mandatory installs, rare custom soundtrack option
Havent had a Nintendo console since the N64 so dont really feel anyway about Nintendo they just really dont have any games that interest me.