I've had a DSi since launch and within a week, the 'R' button began to malfunction, so I exchanged it for another [New] one. Now with my replacement DSi, I've noticed that the LCD screens aren't the same as my first DSi. My replacement DSi has a warmer white point [i.e. slightly yellow] and more noticeable ghosting. I also remember my first DSi being slightly brighter, but I could be mistaken. So I ask you DSi owners: How would you describe your LCD screen? Should I get yet another exchange?