Can someone explain the difference of what happens between these to? I suppose through iTunes is the better way to go, but why? Is their a way to get a clean IOS through OTA? Ive had my my mishaps with an iPhone 4 which was the mistake of IOS7. I really wanted and use all the features it has over IOS6 but it is a real set back in smoothness and slowness over 6. Since the 7.1 update it is much better but i thought i would start a clean OS through iTunes to see if i can get it better however, with my internet access it would be a huge undertaking and several days of locked up internet for the whole family. I ended up erasing all content and settings which so far is decent improvement but am wondering if the grass is greener on the other side.