The iPhone 4 has a few more flaws then just the antenna. My friend had a full plastic cover over the back of the phone, but when he dropped it flat on its back the glass still shattered!!! I was thinking about getting it until i held it in my hands... the first thing i thought was its way to dense. Witch it turned out that i was right. BTW the back glass also scratched very easily with just dust between it and any case it had placed over the back. Also the phone has the glass corners way to close to the edge, where the week point of glass is! IMO the antenna is the least of concerns. The phone is like a beautiful smart woman, that had a frontal lobotomy due to malignant cancer and has 6 months to live. The antenna thing is like a funny looking toe on nice legs, you wont really mind unless you think about it WAY to much.
I got a Galaxy S phone instead, 14% lighter and 4" is really not to big
i even forget its in my pocket! Battery is very similar to the iphone but looses out because the screen sucks up more juice, after all they have almost the same processor (SOC), gyroscope, and battery. So i choose the one with a nicer(IMO) bigger screen, that seamed to be able to take more abuse.