What is the best way to restore iPhone?

[barranquillero1]

my iphone has been acting retarded lately and i want to restore it. delete everything and start fresh.

there are two ways though. one is through itunes and the other one is by pressing delete and restore all settings in your iphone. so which one is the best way?

thanks in advance!

 

[TuffLuffJimmy]

The iTunes one. duh

it restores the firmware and removes everything, where as the iPod way definitely doesn't make it vanilla.