Hey, I'm wondering if I should buy the iPhone 4. I've have had an iPhone 3G and an iPhone 3GS previously. I love the phone for various reasons; specifically the OS and App Store. It's just way ahead in that category. I have a few concerns, if anyone could provide their opinion on them, that would be fantastic. Antenna problem - I heard a case will fix this, I always use a case on my iPhone's so it could be fine? Six months until the next iPhone - do you think it's worth buying right now? Thanks!