My primary iPhone is the 4S. The original iPhone is a second line (used mainly for eBay business and such).
I have the AT&T GoPhone on it so the extra $10. doesn't kill me.
I rarely if ever use the DATA (unlockit.co.nz is your friend) so that isn't bothersome.
In regards to those throwing down the original, it really does what the 4S does: text and make phone calls. In fact, it does that equally as well. So, 90% of what I need my iPhone to do, the original handles the job perfectly.
For fit and finish I enjoy using the iPhone. For everything else (games; apps and internet) nothing beats the 4S, obviously.
Ah, the EDGE network. Such a shock to be used to the 4S data speeds and now even more so with the new iPad on 4G and have to go back to it, at times.
You almost feel like you could bake a dozen chocolate chip cookies from scratch by the time EDGE loads a webpage.
No doubt iPhones are 1000X's better today for all functions outside of the basics: phone calls and texts, but the original started it all and deserves a little more respect.