I prefer playing the DSi XL now whenever possible. I sold my old DSi to get the DSi XL and I am very happy I did. Besides the extra screen real estate of the XL, the battery life of the DSi was noticeably less compared to the DSi XL. The bigger screens of the XL are excellent--yes they do slightly render graphics a bit softer than the DS Lite. If you compare the welcome screen text on the DS Lite to the DSi XL, the DS Lite text is sharp as a tack,
