Many seem to consider those of us locked into the Unlimited Data Plan for iPhone on an extremely special plan that we should never leave. However, Personal Hotspot is only $45, and we pay $30 for unlimited. $15 to add Personal Hotspot would be AMAZING. Of course, we would then be limited to 4GB. What do you guys think? Are you still sticking with your unlimited, or is personal hot spot tempting you away?