I switched to the iPhone 4. Then the iPhone 5s. My logic was always to buy the smallest size available because I would probably change it up every year or two.
Let’s just say the attachment to the iPhone 4 “just working” made me afraid to change to anything new.
With the iPhone 5s, 16GB is just not enough space. Everyone I know whom has a small sized iPhone 5 or 5s complains. It’s truly surprising it’s still on the lineup for the iPhone 6/6+.
With retina apps, better quality photos & videos, media and just larger apps with bigger caches, 16GB is just too little to even enjoy a year of usage.
These devices should likely last 2 years in your pocket, and even with pushing media to the cloud (via Dropbox, etc) and deleting, to get the best experience get the 64GB unit to start with.
We are coming to an age when iPhones are like 1st gen MacBook Air’s. Storage size matters. Especially when you don’t have the option to expand via an SD card!