I'm currently still using my iPhone 4S 16GB... While I get by through constantly deleting apps I no longer use as well as deleting videos I don't plan to watch anymore.... I'm thinking maybe I should get iPhone 6 with a bigger storage in order to be able to comfortably download a ton of apps, as well as download a ton of music and videos. How many would be enough for me? 8GB 16GB 32GB 64GB or 128GB???