I will have a $50 Best Buy gift card soon. What should i buy? I already bought a black Incase slider and have a silicone case. What do you guys recommend? And iTunes card (because we all get apps legitly)? A car charger? An external battery? What do you guys use for you iPhones besides a case? P.S: For those of you that have the black Incase slider for the iPhone 3G, i heard that the matte finish peels off after a while. Is this true? How durable is it?