So I've glanced at the map, and AT&T is solid LTE for NYC. But does that really mean anything? I ask because after the iOS 5.1 upgrade my iPhone 4S is telling me it is 4G (i.e. HSPA+) But in reality that means nothing -- I'm still getting the same puny 1Mbps down as before -- less than 3 times the speed my iPhone 3GS was getting on Europe's real 3G networks. So will LTE simply connect me to the same, already totally over-saturated backhaul AT&T has in New York or San Francisco? I have strong incentive to stick with AT&T because they offer the best data plan option -- my grandfathered unlimited aka 3GB for $30. It is a deep shame that they are making us chose between the two up front. If people could switch between AT&T and Verizon on a monthly basis with their new iPads, that would light a fire under them to fix their networks and their rates (in Italy last summer 19€ got you 5GB -- and a network fast, ubiquitous and reliable enough to actually be able to use it).