At the time, the 4S was the biggest disappointment at launch.
Judge it based on when it was new.
Well then I'd still have to say it's the iPhone 3G because Apple replaced the aluminum design with plastic and kept almost the exact same internals as the original iPhone. It's even thicker than the original iPhone. The only new thing was 3G.
Yes, you can use the same argument for the iPhone 5C when compared to the iPhone 5, but it was never Apple's flagship phone.
Yes. That, exactly.
On second thoughts. Maybe this one:
The iPhone 3g and iphone 4 are my least favorites. They're both very underpowered in my opinion, and the later "s" versions fixed most of the problems.
The iPhone 4 flew with the version of iOS it shipped with, and to this day it remains the favourite phone I've owned. It wasn't underpowered at all at the time. Sure it wasn't as future-proofed as some later models but I thought this poll was a kind of 'on the day, just been released' thing?
S versions are always better than the preceding phone, but the trouble is that they aren't available for another whole year...
Every iOS device I've used works great with the version of iOS it ships with. The real test comes later when you see how long it will actually be supported.