I have an iphone 3g 8gb. Right now, I have 4.42g audio, 2.3g pics, 268g other and 2.4g free space. I've only had it a couple weeks. Will I regret not getting a 16gb?? I'm concerned about the amount of space I have left. It doesn't seem to be very much. I'm pretty new at this, so any advice is appreciated. TIA!!