Best iPhone USB Flash Drive?

[Tempestatem]

My parents got me an iPhone, but it's only a 16 GB. I really want to have movies and stuff that I can watch on it, but I obviously don't have enough room. I know they make some types of external storage, but the ones I have seen reviews for say that it's not good for movies. I really want to find one, any suggestions/ideas?

 

[DelJo63]

See this write-up

 

[Tempestatem]

See this write-up

I saw that, but the hub they said is good (That is about $40) is currently not for sale on amazon anymore.