I hope this is the right area for me to post this. Mods please move if necessary. I can't believe I'm actually considering this but I'm contemplating giving up my unlimited 3G in favor of a new 4G phone and 2GB allowance. Is there a calculator out there that will compare 3G vs 4G data usage for such mundane things as streaming audio, using turn by turn navigator apps, and web browsing? Verizon has one, I know, but I'd feel better if I had something more neutral to which I could compare the results I'm getting from VZW, and perhaps one with a little more fine tuning built in to the calculator itself. Thanks.