My wife and I are pretty much locked into Verizon for North American travel. We have contracts and a corporate discount. My Motorola 3G smartphone has given up and may need a battery replacement, or more likely I'll replace the phone. When I do that I'll probably want to add a second device, which likely will be an ultra-thin tethered laptop instead of an I-Pad. I'll then leave my 13-inch Mac PowerBook behind when traveling. Any thoughts on: - Cost of adding this laptop to the account? - Type of laptop (prefer Mac) - Hotspot device vs. phone reliance? (Assume zero to one additional computers using a hotspot). Does a hotspot device connect more readily with a distant cell tower? - 4G vs. 3G? - Unlocked Global vs. non-global phone (only 1-3 significant overseas trips per year) Thanks for any advice folks may have.