Did your little prepaid phone stay on 3G all the time?
I completely agree with you about the voice plans costing way too much. I use a lot more data and messaging than voice. My voice plan should be like $15 a month and my data plan $40. I'm surprised the phone companies don't offer smaller voice plans. Instead of 450 minutes with unlimited nights and weekends, I'd rather just have 400 total minutes. When I call my friends, it's only for two minutes to say "hey, what time are we going to meetup?," but usually I'll just text them. I'm not saying everyone wants a $15 voice plan, but they should at least offer it.
I think the antiglare screen protectors are a waste of money. I've had my iPhone for three months now and I've never had a problem with the scratch-resistant screen getting scratched. I've never had a problem with glare either - usually, it's either too bright or not bright enough, but never glare. I actually like the glare because I can use it like a rear-view mirror to see behind me without turning around.
Welcome to the iPhone world!