I have just turned on a T-Mobile Sim that I have and put it in my Google Edition HTC One, that supports the T-Mobile LTE bands. (I activated the $30 plan which does support LTE) It sounds like we are in the same area, I have checked it in San Diego and SW Riverside County and have to say I am super impressed with what T-Mobile has done lately with their LTE deployment. I haven't used this T-Mobile sim since about 2 months after the Nexus 4 came out, and the difference is very noticeable. I have AT&T on a plan, which has good LTE in SD but not in Riverside County. Verizon definitely has better LTE coverage in the area overall, but it might be worth your time to try T-Mo again if you are interested in the N5.