Woo hoo! Flux capacitors!
I have a 4, and it's my first iPhone. My wife had the 3G and loved it (she also has a 4). I've been very happy with mine so far. I have spent plenty of time playing with it. I haven't had a connectivity or reception issue, unless I'm in my lead lined box of an office and the lab. I love the versatility and all the features it has. At first, I was concerned about the touch screen keyboard, but I've gotten used to it, and it's not an issue. The pictures I've taken with it are better than expected. All the pictures I posted on my facebook account from our vacation to Greece in august were taken with it.
I'm happy enough with it that the 5 won't be a necessity and I can wait to get the 6 when it comes out.
