I've been using MetroPCS for awhile since, as far as I knew, it was the cheapest in my area. After lurking around on forums I've found the $30 unlimited data/sms/100 minutes. With a Google Voice account I think I can get around the minute limit. Before switching I would like to ask some questions: Is this plan a contract based one? Will Google Voice get around the 100 minute limit? What are the speeds in Dallas, Texas? Can you tether your phone with application and not get punished? Would an unlocked Nexus 4 be a good phone with this service? Thanks in advanced.