Hey there im looking to purchase the nexus 7 soon but im not really sure if 8gb is enough? I have an iphone with 16gb and thats already reached the brink of capacity b/c i use it for everything! Any helpful suggestions would be appreciated. Likewise what would be the benefits of purchasing the nexus? I already have an iphone, laptop and xbox...do i really need the nexus? Ps. It would be my first tablet