IPhone 4 photographing image quality, lenses which one to buy?

Which one of these would be best for my Iphone 4… I'm not exactly a technology whizz, I just want some amazing quality for images.

http://item.mobileweb.ebay.co.uk/viewitem?itemId=190785951771&index=1&nav=WATCHING&nid=86839087522

http://item.mobileweb.ebay.co.uk/viewitem?itemId=261052425922&index=2&nav=WATCHING&nid=86839087522

http://item.mobileweb.ebay.co.uk/viewitem?itemId=330755677512&index=3&nav=WATCHING&nid=86839087522

http://item.mobileweb.ebay.co.uk/viewitem?itemId=170905524958&index=4&nav=WATCHING&nid=86839087522

http://item.mobileweb.ebay.co.uk/viewitem?itemId=251164976637&index=7&nav=WATCHING&nid=86839087522

The will all provide the same mediocre results. In fact, I would wager that most, if not all, are actually the same product resold by different people. Get the cheapest one.