Would I be foolish getting an iPhone 5s tomorrow? I'm currently using an iPhone 4s (it was an older hand me down) - and the battery is ass on it. It's running iOS7, and it just leaves a lot to be desired. More specifically, the screen is way too tiny (I had android phones before this, and it's hard going back to the smaller/squished screen). I'm getting the 5s basically free (already had store credit and my 2 year contract is up for renewal).
My Mom has a 5s right now, and I love it. The screen is perfect size (I actually don't want the screen going much bigger, as I prefer iPhones smaller form factor). I was surprised by how light it was too! Basically I love it. But I also know the 6 is going to be out pretty soon(ish).
The way I see it, if the 6 is really a HUGE improvement over the 5s, I could just buy the phone retail. I dunno.