I'm going to be traveling throughout the U.S. extensively (maybe 3 weeks out of every month), so maintaining cable Internet at my apartment, in addition to mobile connectivity, seems like kind of a waste. I'll be working online as I travel, but most of the non-sensitive work can be done through public wi-Fi channels. Of course I will also need to perform some more sensitive data transactions such as banking, etc. I currently have an old "dumb" phone and a cheap Verizon talk/text plan, as well as Grande cable Internet service. I'm thinking I might just upgrade to a smartphone or mobile hot spot and scrap the Grande completely. I could use my mobile plan as a private network for sensitive transactions and do the data-heavy non-sensitive stuff at the free Wi-Fi locations. What's the most sensible combination of cost-effectiveness and functionality in this kind of situation?