As long as there's no 3G or other (affordable) wireless internet access on the London Underground or anywhere else where I would need my files, I'm simply not i

As long as there's no 3G or other (affordable) wireless internet access on the London Underground or anywhere else where I would need my files, I'm simply not interested in purchasing a product that doesn't have local storage. I mean, imagine an iPhone that would stream everything, I couldn't even listen to music during my daily commute.