Still have mine from when they came out. It's a little buggy and I'll probably end up smashing it eventually and getting one of my applecare+ replacements.
Well since you said people with all models could chime in, both my husband and I have our original iPhone 4 from June 2011. I also am rocking my launch day iPod touch. That's launch day of the first gen...that puppy will not die.
I got my 4S in October, I kept getting panic.plist's on it so I got it replaced at the Apple Store. I currently still have the replacement 4S and its been fine.
Got mine on Opening Day (32GB Black). Never had a single problem with battery life, or any other issues that others have reported. Still loving my 4S and Siri.
I've exchanged mine 4 times. I have the static\buzzing sound coming from the phone whenever 3G is active even during calls. Does anyone else have this issue?
Unfortunately I had a defect in the screen on my launch day 4S an ha to swap it out. There was a strange spot in the upper left corner, looked like something pointy was pushing against the screen from behind.