Im glad someone asked this question. I have been going back and forth about whether to get the 4 or 8 gig. I always thought that 4 would suffice, but then again, it's only $100 more to DOUBLE the storage capacity - but then again, I can do a lot with $100, like pay my phone bill. Also, I will be canceling my contract with Verizon which is going to run me $150. So should I just save the money and stick with the 4 gig? I'd appreciate some feedback on this.
Keep in mind, I don't plan on keeping more than 100 songs or so on my iPhone (just make a smart playlist or something of my favorites. I keep an iPod in my car to listen to when I'm driving). I also only intend on putting a few tv shows on there at a time. My whole thinking was that the 4 gig will be fine because since I will be docking my phone to charge every night, I can just have iTunes update it every day with new stuff.
Bottom line, it would be nice to have the extra space... but is it worth it?