Fortunately for Apple the amount of these users is relatively small, and many of them still buy the latest iPhone after ranting about what a disappointment it was
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The tricky thing about more memory is the fact that Apple is trying to push it's cloud services - In Apple's perfect world everyone would use iCloud and iTunes match, only having to store their apps locally.
I don't like where this cloud concept is going. It's assuming people have 24/7 access to high bandwidth WiFi or that the data allowance on their phone contract would cover it no matter where they happen to be at the time.
I like the idea of having enough onboard storage so I can have all the albums I own permanently on my iPhone and enough space to expand in the future.
My music folder is currently just over the 100Gb mark so a 128Gb iPhone would suit me down to the ground.
This is music alone because I like a lot of EDM stuff and it's usually either individual tracks of around 6 - 10 minutes, DJ sets that can span for hours or rock albums like "Dark Side of the Moon" that can only really be appretiated as they were originally intended.