Loved it when i got it...still love it now. It's the best iPhone I've had thus far, all the other iPhone's had something i didn't love, and when i had the iPhone 4, i actually sold it and bought a 3GS and found i was not all that sad about not having the 4 anymore (for a little while anyways)...i couldn't even imagine selling this phone for any of the previous models.
The camera has also been a blessing...it's amazing and always available. I've caught everything from a tornado, to a food fight to a braves game walk off home run to a race with this thing, and it's been amazing every single time.
I love this phone, and it'll be tough to replace it with the new iPhone if there isn't something substantial to upgrade to in the next variant.