iPhone 4
Totally worth it for the speed alone, not to mention the new software (which of course you can get on a 3G or 3GS). the antenna thing is annoying, but they give you a free case (which I was planning on buying anyway) which fixes the issue - so that's awesome. :) I love apple and ALL of my apple products (iMac, iPad, iPhone, iPod (and i used to have a MacBook and they're great too!))!
I say, get one! :)
-Se7en*
Since the iPhone 4 was just introduced on Verizon not that long ago, I've decided to wait for the iPhone 5 (you know they bring out a new model every year) and then it will be 4G. Of course the network is probably still going to be behind at 3G for a bit more time.
I have an iPhone 3Gs and have used the iPhone4. both are very good, however, if Apple does not agree to have Adobe Flash available for the iPhone, I will probably change to a Google phone or another brand with the Android operating system. at this time you are locked into ?Safari, "Apple's browser". If you download a different browser, that browser still emulates Safari. A pay product in the Apple App store is, "CloudBrowse", which uses Firefox and Flash is running in it. The free version allows you to use it but you have a limited amount of time each session. If, you pay $5.95 a month, you have unlimited full options package.
Got an iphone 4 for a few months now. before that, i used an iphone 3gs. and before that, i've had blackberrys and sony ericsson cell phones.
comparing iphone 3gs and iphone 4, other than the retina display and the flash when taking pictures, there's no other noticeable difference.
comparing iphone 4 to the other phones i have had is not fair because these other phones were not smart phones. they were just the regular ones. so, iphone definitely has an edge over any them. there's so much you can do. and the 3G connectivity definitely gives a huge boost for steve job's kid.
comparing iphone 4 which runs on IOS, and other phones which runs on Android, I would go for the Android. Simply because the androids do not rely heavily on an "itunes-like" software on a specific computer.
i previously had the first iPhone then the 3GS and loved them both. My girlfriend has the iPhone 4 and loves it but even she admits the only difference she has noticed between it and the 3GS as the look, the camera has a flash and that it's slightly faster other than that she thinks it is identical. I use a BlackBerry Torch now which im typing this on which I prefer to iPhones, as much as I love apple products